Alternative Search Engines & Specialized Research Databases
Find the right search engine for every research task
This list of search engines covers academic search engines, medical and government databases, legal records, web archives and statistical data portals — each listed with its operator, access model and a clear “best for” note, so you can pick an alternative to general web search before you start.
- 325 specialized resourcesAcademic, government, legal, archive and data sources
- 16 research categoriesOrganized by research task, not by brand
- 325 editorially reviewedDocumented desk reviews; others show “Not Yet Rated”
- Research guidesLearn how to search each source effectively
Editor’s Picks: Search Engines Worth Exploring
Discover search engines and specialized databases selected by AOFIRS for their research usefulness, source credibility, specialized coverage, and information-discovery capabilities. Each featured resource should help researchers find reliable information more efficiently.
How We Select Editor’s Picks
AOFIRS Editor’s Picks highlight search engines and research databases selected for their usefulness, relevance, credibility, specialized coverage, and information-discovery capabilities.
Selections are based on editorial assessment, not advertising placement or popularity alone.
Featured status does not guarantee the accuracy or completeness of information provided by third-party platforms.
Explore This List of Search Engines & Databases
arXiv PDF Fulltext Search
PDF Search EnginesCurated research-sharing platform hosting over 2 million open-access scientific preprints in PDF.
BASE (Bielefeld Academic Search Engine)
PDF Search EnginesAcademicSearch engine for academic web resources harvested from thousands of open repositories, run by Bielefeld University Library.
Best for: Searching open repositories worldwide
CERN Document Server PDF Search
PDF Search EnginesInstitutional repository indexing over 1 million scientific documents and downloadable PDF preprints.
CORE PDF Search
PDF Search EnginesWorld's largest aggregator of open access research papers with millions of hosted PDF fulltexts.
DOAJ PDF Search
PDF Search EnginesDirectory of Open Access Journals indexing over 10 million peer-reviewed articles with direct PDF access.
FreeFullPDF
PDF Search EnginesSpecialist search for scientific PDFs, theses and patents gathered from open web sources.
Best for: Discovering scholarly PDF documents
Google Advanced Search
PDF Search EnginesGeneral Google web search with file-type, site and date filters; use filetype:pdf to find PDF documents.
Best for: Finding web PDFs with filetype:pdf
Internet Archive Books PDF Search
PDF Search EnginesDigital library offering millions of free downloadable PDF books and historical documents.
OpenAlex PDF Search
PDF Search EnginesOpen index of the global research system linking hundreds of millions of papers to open PDFs.
PDF Room
PDF Search EnginesSearch engine and catalog for free PDF books and documents, browsable by category.
Best for: Browsing and searching free PDF books by category
PDFSearch.org
PDF Search EnginesDedicated search engine for finding publicly available PDF books and documents on the web.
Best for: Finding PDF books and documents on the open web
PhilPapers PDF Search
PDF Search EnginesComprehensive index and bibliography of philosophy research with open access PDF repository.
ResearchGate
PDF Search EnginesResearch network where authors share papers and readers can request full texts.
Best for: Author-shared research and full-text requests
Science.gov
PDF Search EnginesAcademicA federated gateway to reports, publications, datasets, software, and other research results from participating federal agencies. Search returns links and records from source systems rather ...
Best for: Searching U.S. federally funded scientific and technical research across agencies
ScienceDirect
PDF Search EnginesElsevier platform with subscription and open-access journal articles and book chapters.
Best for: Publisher-hosted scholarly articles
SciLit PDF Search
PDF Search EnginesAggregator of scientific literature indexing journal papers, book chapters, and open access PDFs.
Semantic Scholar
PDF Search EnginesAcademicSemantic Scholar is a free, AI-powered search engine for scientific literature built by the Allen Institute for AI (Ai2). It indexes more than 200 million papers across all fields of science.
Best for: Exploring scientific literature quickly with AI summaries and citation context
SSRN eLibrary PDF Search
PDF Search EnginesPreeminent social science preprint repository offering free PDF downloads of academic working papers.
Unpaywall Search
PDF Search EnginesOpen database harvesting legal, author-archived PDF preprints across 50,000 publishers.
WorldCat
PDF Search EnginesAcademicA union-catalog discovery service aggregating participating libraries’ holdings, with links to online content or local library catalogues. It helps users locate materials; it is not ...
Best for: Locating books, journals, articles, media and other materials across library collections and determining which libraries hold them.
AGRICOLA
AcademicGovernment-backed subject resource integrated into NAL SEARCH; selecting the AGRICOLA dataset targets the agricultural catalog. NAL says the former OpenAGRICOLA interface was retired, so direct ...
Best for: Agricultural science literature, USDA publications, and related bibliographic records.
arXiv
AcademicarXiv is a free, open-access repository of scientific preprints operated by Cornell University. Researchers post papers there before or alongside journal publication, so it is often the first place new work in physics, mathematics, computer science and related fields appears.
Best for: Finding the latest preprints in science and computing
CERN Document Server
AcademicCDS documents a broad structured search supporting metadata, full-text, and reference searching, useful for CERN-focused research and institutional records. Official terms state the service is ...
Best for: CERN research and institutional output, including publications, reports, multimedia, and historical material.
CORE
AcademicCORE is a not-for-profit service run by The Open University and Jisc that aggregates open-access research papers from thousands of repositories and journals worldwide. It is one of the largest free collections of full-text research.
Best for: Finding free full-text research papers
Crossref Search
AcademicSearch tool for metadata registered with Crossref, the DOI registration agency for scholarly publications.
Best for: Finding and confirming DOIs and citation details
dblp
AcademicA focused, openly accessible bibliographic directory with distinct publication, author, and venue search and a documented API. Its own guidance notes API elements may change ...
Best for: Computer science publications, authors, journals, and conference proceedings.
Dimensions
AcademicLinked research-information platform with cross-search and analytical views that connect research outputs to funding and other research objects. Feature and content availability differs between free ...
Best for: Discovery across publications and datasets, with contextual links to grants, citations, patents, clinical trials and policy outputs; research landscape analysis.
DOAJ (Directory of Open Access Journals)
AcademicThe Directory of Open Access Journals (DOAJ) is a community-curated index of peer-reviewed open-access journals. Journals must meet published quality and transparency criteria to be listed, and they are removed if they stop complying.
Best for: Finding and vetting open access journals
EconBiz
AcademicA specialist economics/business portal combining multiple bibliographic resources, relevance/recency sorting, filters, thesaurus-supported topic searching, and access links. It can point to open materials or licensed ...
Best for: Economics and business studies literature discovery, including working papers, articles, events, and access options.
ERIC
AcademicUS Department of Education database of education research and information, sponsored by the Institute of Education Sciences.
Best for: Education research and reports
Europeana
AcademicCross-institutional cultural heritage discovery portal organized by themes, topics, periods and institutions. It is an interdisciplinary research resource for cultural and historical evidence, rather than ...
Best for: Primary-source and cultural-heritage discovery: digitized books, manuscripts, images, audiovisual material, objects and archival records from European institutions.
Google Scholar
AcademicGoogle Scholar is a free search engine for scholarly literature. It indexes journal articles, theses, books, conference papers, preprints, patents and court opinions from publishers, universities and repositories around the world.
Best for: Finding scholarly papers and tracing who cites them
HathiTrust Digital Library
AcademicA large research digital library. Anyone can search, but access to reading and downloads depends on rights, location, and—in some cases—member-library affiliation. It is not ...
Best for: Searching digitized books and archival scholarly material; openly readable public-domain titles
JSTOR
AcademicJSTOR is a not-for-profit digital library of academic journals, books and primary sources run by ITHAKA. It is especially strong for humanities and social sciences, with many journal runs digitised back to their first issue.
Best for: Humanities and social science journals and books
NASA ADS
AcademicA field-specific bibliographic system whose official help describes sophisticated query fields, filters, sorting, saved queries, and author/identifier search. Full text is not universally available and ...
Best for: Astronomy and astrophysics literature, with related physics, geophysics, and preprint discovery.
NASA NTRS
AcademicThe official repository covers NASA STI and supplies public metadata, document links, and documented search operators; NASA also describes an OpenAPI and public metadata downloads. ...
Best for: NASA-funded scientific and technical reports, articles, conference materials, patents, media, and related records.
Open Science Framework
AcademicOpen research infrastructure and discovery environment for project records, preregistrations, preprints, and links to research outputs stored in OSF or connected services. It is not ...
Best for: Finding and linking openly shared research projects, registrations, preprints, data, materials and code; managing reproducible collaborative research.
OpenAIRE Explore
AcademicSearch interface over an open scholarly knowledge graph aggregating and interlinking metadata from many trusted sources. Offers filters by output type and access, graph relationships, ...
Best for: Discovering and connecting publications, datasets, software, projects, funders, organizations and repositories, especially in open-science workflows.
OpenAlex
AcademicOpenAlex is a free and open catalogue of the global research system, run by the non-profit OurResearch. It indexes hundreds of millions of scholarly works and links them to authors, institutions, journals, topics and funders.
Best for: Open scholarly metadata and research analytics
OpenDOAR
AcademicA curated directory of repositories rather than a full-text host. Official materials describe editorial review of listed repositories and provide guidance on repository policies; availability ...
Best for: Locating and comparing open-access repositories worldwide
OSTI.GOV
AcademicThe official DOE discovery portal offers advanced search, filters, record-level metadata, API/download options, and a clearly described distinction between resource-available and citation-only records. Full text ...
Best for: DOE-funded science, technology, and engineering research outputs across publications, reports, datasets, software, patents, and more.
RePEc / IDEAS
AcademicIDEAS is a free interface to decentralized publisher-supplied RePEc metadata; it supports broad economics discovery and personalized MyIDEAS alerts/lists. Decentralized contribution and publisher-maintained metadata can ...
Best for: Economics working papers, journal articles, books, author profiles, and research series.
SciELO
AcademicA regional scholarly publishing and discovery network with an official advanced-search interface and explicit privacy documentation under Brazil’s LGPD. Open-access orientation is a major strength, ...
Best for: Open-access scholarly journals and articles, particularly from Latin America, the Caribbean, Spain, Portugal, and South Africa.
Scilit
AcademicScholarly publication aggregator that sources and merges metadata from multiple public and publisher platforms. Provides advanced Boolean/field search, related articles, rankings and alerts; it identifies ...
Best for: Fast, broad discovery across journal articles, books, chapters and preprints, including citation alerts and related-article suggestions.
SSRN
AcademicSSRN’s official support documentation says searching and discovery are free without an account and documents advanced search by title, author, keyword, or full text, plus ...
Best for: Working papers and preprints across social sciences, law, business, economics, and related fields.
The Lens
AcademicScholarly and patent discovery platform with structured filters and links between scholarly works and patent citations.
Best for: Cross-disciplinary scholarly discovery that connects papers with patents and innovation activity.
bioRxiv
MedicalLife-sciences preprint archive and distribution service. Submissions receive basic screening, but manuscripts are not peer-reviewed, edited or typeset before posting; versions and later journal publication ...
Best for: Rapid discovery of unpublished life-sciences research and tracking early findings, versions and emerging topics.
ClinicalTrials.gov
MedicalRegistry of privately and publicly funded clinical studies worldwide, run by the US National Library of Medicine.
Best for: Registered clinical trial status and results
Cochrane Library
MedicalHigh-quality systematic reviews for healthcare decisions, published by Cochrane.
Best for: Systematic reviews and evidence synthesis
DailyMed
MedicalNational Library of Medicine repository of official FDA drug package inserts and medication guides.
DrugBank Online
MedicalComprehensive pharmaceutical reference combining detailed drug data with drug target information.
Epistemonikos
MedicalCollaborative multilingual database of health systematic reviews and primary medical studies.
EU Clinical Trials Register
MedicalOfficial public registry of clinical trials conducted in the European Union and EEA.
Europe PMC
MedicalEurope PMC is a free search engine for life-science and biomedical literature, run by EMBL-EBI with support from research funders. It includes all of PubMed, millions of free full-text articles, preprints, patents, clinical guidelines and research grant records.
Best for: Biomedical research including full text and preprints
LILACS
MedicalComprehensive health sciences database indexing over 1 million scientific records across Latin America and the Caribbean.
MedlinePlus
MedicalA health-information service for patients, families, and friends, with health topics, medical tests, genetics, medications, and links to selected sources. It provides education rather than ...
Best for: Understandable, curated consumer health information in English and Spanish
medRxiv
MedicalPreprint archive for complete but unpublished medical and health-sciences manuscripts. It provides rapid access to findings and revisions, with screening but no pre-publication peer review; ...
Best for: Early discovery of unpublished clinical, medical and related health-sciences research—provided users explicitly account for the unreviewed status.
OpenMD
MedicalCurated search engine indexing clinical guidelines, textbooks, and government health agencies.
Orphanet
MedicalInternational reference portal for rare diseases and orphan drugs, led by INSERM.
PROSPERO
MedicalInternational prospective register of systematic reviews in health and social care.
PubChem
MedicalWorld's largest free chemical information database maintained by the US National Institutes of Health.
PubMed
MedicalPubMed is a free search engine from the US National Library of Medicine (NLM) that indexes citations and abstracts for biomedical and life-sciences literature, primarily from MEDLINE, plus PubMed Central and NCBI Bookshelf.
Best for: Finding medical and life-science research
PubMed Central (PMC)
MedicalA public full-text archive, not a general-purpose web search engine. The collection includes journal articles, accepted manuscripts, and some preprints; inclusion should not be mistaken ...
Best for: Finding and reading archived biomedical and life-sciences research articles
Toxnet / NLM Toxicology Data
MedicalUS National Library of Medicine gateway for toxicology databases and hazardous chemical exposures.
TRIP Database
MedicalClinical search engine designed to quickly find high-quality evidence-based healthcare literature.
WHO Global Index Medicus
MedicalA unified search interface aggregating records from WHO Regional Indexes Medicus, including AIM, IMEMR, IMSEAR, LILACS and WPRIM. Offers regionally sourced bibliographic and, where available, ...
Best for: Health and public-health evidence from and within low- and middle-income countries, particularly regional literature less visible in major international indexes.
Australia Trove Government Gazettes
Government & Public RecordsSearchable archive of historical Australian Commonwealth and state gazettes from 1832 onwards.
Canada Gazette
Government & Public RecordsOfficial public gazette publishing formal Canadian government notices and royal proclamations.
Congress.gov
Government & Public RecordsOfficial source for bills, laws and congressional records, run by the Library of Congress.
Best for: US federal legislation and its status
Data.gov
Government & Public RecordsUS government portal for open datasets from federal agencies.
Best for: Finding US government open data
Espacenet
Government & Public RecordsEPO’s public patent-search interface provides worldwide patent-document access, classification searching, machine translation, and explanatory tools.
Best for: Worldwide patent-publication search, family and technical exploration, and contextual information about grant and in-force status.
EU Open Data Portal
Government & Public RecordsOfficial portal of European data providing open government records and public datasets.
Federal Register Search
Government & Public RecordsDaily gazette of the United States Government publishing federal regulations and executive orders.
Google Patents
Government & Public RecordsA searchable index of patent publications and selected non-patent technical literature, with translated text and advanced search features.
Best for: Broad patent-publication and prior-art discovery using keywords, fields, classifications, and chemistry search.
GovInfo
Government & Public RecordsThe GPO’s official information service disseminates federal government publications and offers API access to document content and metadata across collections.
Best for: Finding and retrieving official U.S. federal publications, including searchable documents, metadata, collections, and update feeds.
GPO govinfo
Government & Public RecordsUS Government Publishing Office repository of authenticated public federal records.
NASA NTRS Technical Reports
Government & Public RecordsNASA Technical Reports Server providing public access to aerospace research documents.
OECD iLibrary
Government & Public RecordsOnline library of the Organisation for Economic Co-operation and Development.
OpenSanctions
Government & Public RecordsA maintained aggregation and entity-resolution resource for sanctions, PEPs, and related risk datasets, with web search, matching/search/entity APIs, and downloadable bulk data.
Best for: Screening and researching sanctioned, politically exposed, and other risk-relevant people and organizations; API or bulk-data integration.
Regulations.gov
Government & Public RecordsA federal eRulemaking portal for searching regulatory materials and participating in comment processes. Agency and docket workflows determine what is available; submitted comments may be ...
Best for: Finding federal rulemaking dockets, notices, supporting documents, and public comments
SAM.gov Search
Government & Public RecordsOfficial United States Government system for award management and federal vendor data.
UK National Archives Discovery
Government & Public RecordsOfficial search portal for historical records and public papers held by the UK National Archives.
UN Digital Library
Government & Public RecordsOfficial digital repository for all United Nations documents and parliamentary records.
USA.gov Search
Government & Public RecordsOfficial United States Government search portal indexing federal agency services and records.
USPTO Patent Public Search
Government & Public RecordsOfficial United States Patent and Trademark Office public patent examination database.
WIPO PATENTSCOPE
Government & Public RecordsWIPO’s patent search service provides full-text published PCT applications, participating-office documents, and non-patent literature with search, translation, and patent-information tools.
Best for: Searching PCT international applications and participating national or regional patent collections, including multilingual and chemical queries.
ANU Open Research
Document & Archive SearchAustralian National University repository preserving scholarly papers and historical Pacific archives.
archive.today
Document & Archive SearchWeb page archiving service that saves a snapshot of a page on demand.
Best for: Saving a quick snapshot of a page as evidence
BAnQ Numérique
Document & Archive SearchQuebec National Library and Archives digital portal for cultural heritage records.
British Library Digitised Collections
Document & Archive SearchOnline research portal for the national library of the United Kingdom.
Calisphere
Document & Archive SearchGateway to digital collections from California libraries, archives, and historical societies.
Chronicling America Historic Newspapers
Document & Archive SearchNational Digital Newspaper Program preserving historic American newspapers.
Dialnet
Document & Archive SearchOne of the largest virtual libraries of Hispanic scientific articles and doctoral theses.
Digital Public Library of America (DPLA)
Document & Archive SearchAggregates metadata from partner cultural institutions and provides discovery, exhibitions, and primary-source sets; it does not itself hold every physical item or guarantee that all ...
Best for: Cross-collection discovery of digitized U.S. library, archive, and museum holdings
Dutch National Archives Search
Document & Archive SearchOfficial search portal of the National Archives of the Netherlands.
Europeana Collections
Document & Archive SearchEuropean digital platform for cultural heritage aggregating art, books, and archives.
Gallica
Document & Archive SearchDigital library of the National Library of France containing over 10 million documents.
German Digital Library
Document & Archive SearchCentral public access platform for millions of German cultural heritage items.
HathiTrust Digital Library Search
Document & Archive SearchCollaborative digital library repository preserving over 18 million digitized volumes.
Internet Archive (digital library)
Document & Archive SearchThe Internet Archive is a non-profit digital library based in San Francisco. It provides free access to millions of digitized books and texts, audio recordings, films, television news, software and images, and runs the Wayback Machine archive of the web.
Best for: Accessing digitized books, texts, recordings, films, software, and other cultural-heritage holdings; this review concerns the library, not the Wayback Machine.
Library of Congress Digital Collections
Document & Archive SearchDigital collections of the world's largest library holding hundreds of millions of items.
National Archives Catalog (NARA)
Document & Archive SearchUS National Archives catalog holding millions of historical documents and declassified records.
Perseus Digital Library
Document & Archive SearchTufts University flagship digital library of classical Greco-Roman texts and commentaries.
Trove Digitised Manuscripts
Document & Archive SearchNational Library of Australia digital portal for rare historical letters and manuscripts.
Wayback Machine
Document & Archive SearchThe Wayback Machine is the Internet Archive's web archive. It holds hundreds of billions of captured web pages going back to 1996, letting you see how a site looked on a given date.
Best for: Seeing how a web page looked in the past
Wellcome Collection Digital Library
Document & Archive SearchFree digital library exploring health and human experience through historical archives.
Census Reporter
Data & StatisticsKnight-funded portal simplifying US Census Bureau data for journalists and researchers.
data.europa.eu
Data & StatisticsThe EU’s open-data discovery and reuse portal, succeeding the EU Open Data Portal and European Data Portal. It aggregates dataset metadata; the data and reuse ...
Best for: Discovering public datasets from EU, national, regional, local, and international portals
Data.world
Data & StatisticsEnterprise and open data catalog connecting datasets with SQL query editors and documentation.
DataCite Commons
Data & StatisticsGlobal discovery engine linking research datasets, software, publications, and funding sources.
Dryad Digital Repository
Data & StatisticsCurated scientific data publishing platform directly linked to peer-reviewed scholarly literature.
Eurostat
Data & StatisticsThe European Union’s statistical office provides a public data browser and REST APIs for statistical data and metadata in formats including SDMX, JSON-stat, and TSV.
Best for: Official European and EU-member-state statistics, structured dataset queries, and metadata discovery.
Figshare
Data & StatisticsOpen access scientific data repository where researchers discover and share citable research figures and datasets.
FRED (Federal Reserve Economic Data)
Data & StatisticsA large economic-data platform with charting, maps, downloadable series, and a documented API. Account features are optional and free according to official materials, but data ...
Best for: Finding, charting, and downloading U.S. and international economic and financial time series
Google Dataset Search
Data & StatisticsSearch engine from Google for finding datasets published across the web.
Best for: Finding datasets on any topic
Harvard Dataverse
Data & StatisticsPioneering university data repository hosting thousands of research dataverses and replication packages.
IPUMS
Data & StatisticsWorld's largest individual-level population database harmonizing census records across 100+ nations.
Kaggle Datasets
Data & StatisticsWorld's largest data science community platform indexing over 300,000 public datasets.
OECD Data Explorer
Data & StatisticsThe OECD’s statistical data warehouse and discovery interface for official datasets, offering filters, downloads, and programmatic API access.
Best for: OECD and partner-economy official statistics, dataset exploration, downloads, and SDMX API retrieval.
Our World in Data
Data & StatisticsFree online publication of research and data on global issues, based at the University of Oxford.
Best for: Charts and data on global trends
re3data
Data & StatisticsGlobal registry of research data repositories indexing institutional, disciplinary, and generalist repositories.
Statista Free Search
Data & StatisticsGlobal business data platform indexing market research, consumer trends, and economic indicators.
UNdata
Data & StatisticsA unified portal of statistical datamarts with searchable tables, downloads, country profiles, and REST/SOAP SDMX API access.
Best for: Cross-topic discovery and download of international statistics compiled by UN and other international and national sources.
Wikidata Query Service
Data & StatisticsA public SPARQL endpoint and web GUI for querying Wikidata’s linked knowledge graph and returning structured results.
Best for: Ad hoc structured research and relationship discovery across Wikidata using SPARQL and a visual query interface.
World Bank Open Data
Data & StatisticsFree access to global development data from the World Bank.
Best for: Country-level development indicators
Zenodo
Data & StatisticsUniversal open-access repository developed by CERN and OpenAIRE for sharing scientific data.
Boardreader
General & Alternative SearchSpecialized search engine indexing discussion forums, bulletin boards, and community threads.
Brave Search
General & Alternative SearchBrave Search is a private search engine from the company behind the Brave browser. Unlike most alternatives, it runs its own independent web index rather than relying mainly on Google or Bing.
Best for: Private web search on an independent index
Disconnect Search
General & Alternative SearchPrivacy search tool routing queries through encrypted proxy servers to strip personal identifiers.
DuckDuckGo
General & Alternative SearchDuckDuckGo is a privacy-focused search engine that does not build user profiles or store personal search histories. Results combine its own crawler with sources including Microsoft Bing.
Best for: Everyday private searching
Ecosia
General & Alternative SearchPrivacy-conscious search engine dedicating 100% of profits to climate action and tree planting.
Gibiru
General & Alternative SearchPrivate search engine providing anonymous search results and indexing alternative web content.
Kagi
General & Alternative SearchIndependent, subscription-funded web search with personalization controls, search operators, and optional privacy-preserving Privacy Pass. Trial access is limited; continuing use is paid.
Best for: People seeking an ad-free, customizable general-purpose search engine and willing to pay for it.
Lilo
General & Alternative SearchFrench privacy search engine funding environmental, social, and healthcare initiatives.
Lukol
General & Alternative SearchAnonymous search engine providing enhanced search results while blocking tracking scripts.
Marginalia Search
General & Alternative SearchMarginalia Search is an independent, open-source search engine that focuses on the small, non-commercial web. It favours text-heavy personal websites, blogs and older-style pages over large commercial sites and SEO content.
Best for: Curious users exploring smaller, independent, and less commercially prominent websites beyond mainstream ranking patterns.
Metacrawler
General & Alternative SearchPioneering web metasearch service combining queries from multiple web search engines.
Million Short
General & Alternative SearchExperimental search engine that removes top web domains to surface niche blogs and overlooked pages.
Mojeek
General & Alternative SearchUK-based search engine with its own independent index since 2004.
Best for: Unpersonalized results from its own crawler
Presearch
General & Alternative SearchDecentralized search platform routing queries through community-run nodes.
Qwant
General & Alternative SearchFree-to-use web search service with search-dependent advertising and privacy commitments described in its official policy and help center.
Best for: Users wanting a no-cost European general-purpose search engine with stated limits on profiling and behavioral advertising.
SearXNG
General & Alternative SearchMetasearchFree, open-source metasearch software that aggregates other search services. It is software, not one centrally operated search provider; public instance privacy depends on its operator, ...
Best for: Privacy-conscious users who can choose a trustworthy public instance or operate their own metasearch instance.
Startpage
General & Alternative SearchPrivacy search engine that serves Google results without logging or profiling users.
Best for: Google-quality results without tracking
Stract
General & Alternative SearchIndependent open-source search engine allowing users to customize algorithms with Optics filters.
Swisscows
General & Alternative SearchSwiss privacy search engine with its own partial index and a family-safe filter.
Best for: Family-safe private searching
YaCy
General & Alternative SearchDistributed open-source search engine running on a decentralized peer-to-peer network.
AfricanLII
Legal ResearchPan-African legal portal connecting national legal information institutes and continental courts.
AustLII
Legal ResearchAustralasian Legal Information Institute providing free public access to over 900 Australasian legal databases.
BAILII
Legal ResearchBritish and Irish Legal Information Institute with free judgments and legislation.
Best for: UK and Irish case law and legislation
CanLII
Legal ResearchCanadian Legal Information Institute providing free access to Canadian court judgments, tribunal decisions, and statutes.
Caselaw Access Project
Legal ResearchDigitized archive of all 360 years of official American case law from Harvard Law School Library.
Cornell Legal Information Institute (LII)
Legal ResearchPioneering public legal search portal offering the US Code, CFR, federal rules, and Wex legal dictionary.
CourtListener
Legal ResearchCourtListener is a free legal research website from the non-profit Free Law Project. It provides millions of US court opinions, oral argument recordings, judge information and federal court dockets from the RECAP Archive.
Best for: US case law, oral arguments and PACER dockets
EUR-Lex
Legal ResearchOfficial access to European Union legal documents from the Publications Office of the EU.
Best for: EU law, treaties and case law
Fastcase Public Search
Legal ResearchComprehensive American legal research engine featuring visual citation maps and statutory annotations.
FindLaw Case Law
Legal ResearchFree legal portal searching US Supreme Court, Federal Circuit, and state appellate court opinions.
HathiTrust US Law Collections
Legal ResearchMassive university-backed digital library preserving historical legal treatises and statutory records.
HUDOC
Legal ResearchOfficial case-law database of the European Court of Human Rights (ECHR) in Strasbourg.
Indian Kanoon
Legal ResearchSearch engine for Indian law, court judgments, legislative acts, and constituent assembly debates.
Justia
Legal ResearchFree legal information site with US federal and state cases, codes and regulations.
Best for: Free US case law, codes and regulations
LawCite
Legal ResearchAutomated international legal citator tracking citation networks across millions of cases and articles worldwide.
OpenJurist
Legal ResearchFree access database indexing over 600,000 US Federal Court of Appeals and Supreme Court decisions.
Oyez
Legal ResearchMultimedia archive for Supreme Court of the United States cases, oral arguments, and justice alignments.
SCOTUSblog Case Archive
Legal ResearchAuthoritative tracker for all pending and decided Supreme Court of the United States cases.
vLex Justis Search
Legal ResearchGlobal legal research platform indexing international case law, legislation, and legal journals.
WorldLII
Legal ResearchWorld Legal Information Institute linking free legal databases from many countries.
Best for: International and comparative law
ABN Lookup
Business & FinancialPublic registry of Australian Business Numbers (ABN) and corporate registrations from the Australian Business Register.
BaFin Company Database
Business & FinancialOfficial database of German financial supervisory authority (BaFin) tracking authorized institutions.
Canadian Business Registries Search
Business & FinancialUnified search portal querying federal, provincial, and territorial business registries across Canada.
Companies House
Business & FinancialOfficial UK register of companies with free filings, officers and persons with significant control.
Best for: UK company records, officers and filings
Corporate Information (Wright Reports)
Business & FinancialFinancial research portal offering company profiles, ratios, and balance sheets for over 45,000 public firms.
Crunchbase Search
Business & FinancialGlobal business database indexing private technology companies, funding rounds, and investors.
FCA Financial Services Register
Business & FinancialOfficial register of UK financial firms, banking permissions, and warnings against fraudulent clone firms.
FINRA BrokerCheck
Business & FinancialFree regulatory tool to research the background, credentials, and conduct of US financial brokers and firms.
GLEIF Search
Business & FinancialGlobal Legal Entity Identifier Foundation database tracking ownership structures of financial entities worldwide.
GovTribe
Business & FinancialProcurement research engine tracking US federal contract awards, subcontractors, and federal spending.
ICIJ Offshore Leaks Database
Business & FinancialDatabase from the International Consortium of Investigative Journalists covering offshore entities from major leak investigations.
Best for: Researching offshore companies and connections
Morningstar Quote & Filings Search
Business & FinancialFinancial market research engine providing stock valuations, ETF portfolios, and financial statements.
North Data
Business & FinancialCorporate intelligence platform mapping European company ownership, balance sheets, and director networks.
OpenCorporates
Business & FinancialOpenCorporates is the largest open database of companies in the world, built from official company registries in over 140 jurisdictions. Each record links back to its source registry.
Best for: Identifying companies and officers across countries
OpenOwnership Register
Business & FinancialGlobal open-data register of beneficial ownership showing who ultimately controls companies.
OpenSecrets
Business & FinancialPremier US non-profit database tracking money in politics, campaign finance, and corporate lobbying.
SEC EDGAR
Business & FinancialEDGAR (Electronic Data Gathering, Analysis, and Retrieval) is the US Securities and Exchange Commission's free public database of corporate filings. It holds annual and quarterly reports, current reports, proxy statements, insider trading forms and fund disclosures.
Best for: Researching US public companies
SEDAR+
Business & FinancialOfficial Canadian system for securities filings and disclosure documents.
Best for: Canadian public-company filings
UK Insolvency Service Register
Business & FinancialSearchable public register of bankruptcies, debt relief orders, and director disqualifications in the UK.
World Bank Sanctions List
Business & FinancialOfficial public registry of sanctioned firms and individuals ineligible for World Bank-funded contracts.
192.com
People & IdentityAuthoritative UK people finder searching electoral registers, directory enquiries, and company directors.
BeenVerified Public Search
People & IdentityConsumer background search service compiling public records into easy-to-read reports.
BillionGraves
People & IdentityWorld's largest resource for GPS-tagged cemetery headstone photographs and records.
FamilySearch
People & IdentityFree genealogy platform with billions of historical records, run by a non-profit.
Best for: Genealogy and historical records
FastPeopleSearch
People & IdentityFree public records directory offering fast US name, address, and reverse phone number search.
Find a Grave
People & IdentityCrowd-sourced database of graves and memorials worldwide.
Best for: Memorials and burial records
GenealogyBank
People & IdentityHistorical newspaper and obituary database helping researchers trace family lineages.
Instant Checkmate Search
People & IdentityPublic background check service specializing in court records, arrests, and demographic data.
Judiciary Case Records Lookup
People & IdentityFree nationwide search engine for United States civil and criminal court case dockets.
Pipl Identity Search
People & IdentityEnterprise identity trust and investigation platform linking digital and physical identities.
Search Systems
People & IdentityPublic-records directory linking to government sources by record type and jurisdiction; free navigation with possible agency fees and sponsored third-party services.
Best for: Locate official public records by jurisdiction
SocialCatfish
People & IdentitySpecialized identity verification service designed to detect online romance scams and fake profiles.
Spokeo Search
People & IdentityPeople intelligence platform compiling public records, social media handles, and property data.
That’s Them
People & IdentityFree public information lookup providing reverse email, phone, IP, and address searches.
Truecaller Search
People & IdentityWorld's largest caller ID and phone directory database for verifying unknown caller identities.
USPhoneBook
People & IdentityFast, free reverse telephone directory for looking up landline and mobile telephone numbers.
VeriPages
People & IdentityFree public-records people search by name, phone number or address, with city, state and age filters.
Best for: Free public-records people search
VoterRecords
People & IdentityFree database of publicly available voter registration records and party affiliations.
Whitepages
People & IdentityUS directory of people, phone numbers and addresses with paid background reports.
Best for: US phone and address directory
ZabaSearch
People & IdentityPioneering free people search engine querying public US telephone and address directories.
AlienVault OTX
Domain & WebsiteWorld's largest open threat intelligence community sharing threat indicators and malicious IPs.
Archive-It Search
Domain & WebsiteWeb archiving platform helping over 800 partner institutions harvest and preserve digital records.
BuiltWith
Domain & WebsiteShows the technologies, analytics and hosting used by a website.
Best for: Website technology profiles
Censys Search
Domain & WebsitePublic internet scanning search engine tracking internet infrastructure and cryptographic certificates.
crt.sh
Domain & WebsiteSearch engine for TLS certificates recorded in public certificate transparency logs.
Best for: Certificate transparency logs
DNSDumpster
Domain & WebsiteFree domain research tool discovering subdomains, mail exchangers, and IP hosts.
DomainTools Whois Lookup
Domain & WebsiteLeading cyber intelligence platform for domain profiling, registration data, and IP history.
HackerTarget
Domain & WebsiteSuite of hosted security tools for open-source network reconnaissance and DNS mapping.
Netcraft Site Report
Domain & WebsiteInternet research service analyzing website infrastructure, hosting providers, and risk ratings.
RiskIQ / PassiveTotal
Domain & WebsiteThreat analysis platform providing passive DNS and external digital asset mapping.
Robtex
Domain & WebsitePioneering network and domain analysis tool providing shared IP and DNS graphs.
SecurityTrails
Domain & WebsiteTotal internet data engine indexing historical DNS records and domain infrastructure.
Shodan Search Engine
Domain & WebsitePioneering search engine indexing internet-facing servers, webcams, and network infrastructure.
Spyse Cybersecurity Search
Domain & WebsiteCyber intelligence search engine delivering structured data on digital assets.
Sublist3r Domain Scanner
Domain & WebsiteReconnaissance tool designed to enumerate subdomains of websites using open sources.
URLScan.io
Domain & WebsiteService that scans a URL and records requests, domains, screenshots and technologies.
Best for: Scanning and inspecting web pages
ViewDNS.info
Domain & WebsiteComprehensive suite of domain, DNS, and IP network investigation utilities.
VirusTotal Search
Domain & WebsiteSecurity portal aggregating antivirus engines to inspect domains, URLs, and malicious files.
Whoisology
Domain & WebsiteDomain ownership research database linking millions of domains by registrant email and name.
Whoxy
Domain & WebsiteReverse WHOIS domain research engine maintaining millions of historical WHOIS records.
Copernicus Open Access Hub
GeospatialOfficial data hub providing full and open access to Sentinel satellite data products.
Earthdata Search
GeospatialNASA search portal providing access to Earth science data products and satellite telemetry.
GeoHack
GeospatialWikimedia utility connecting geographic coordinates to satellite, topographic, and weather maps.
GeoNames Search
GeospatialOpen geographical database containing millions of placenames and geographic feature points.
Global Forest Watch
GeospatialOpen monitoring platform tracking forest change, biodiversity, and land use worldwide.
Google Earth Engine Data Catalog
GeospatialCloud platform for planetary-scale geospatial analysis and remote sensing data discovery.
LandViewer
GeospatialOn-the-fly satellite data processing platform with spectral index calculations.
Mapbox Open Datasets
GeospatialMapping platform providing open geospatial vector tiles and global terrain models.
Marine Regions Gazette
GeospatialAuthoritative geographic database of marine stations, exclusive economic zones, and sea boundaries.
NASA Worldview
GeospatialNASA viewer for daily global satellite imagery and environmental layers.
Best for: Near-real-time satellite imagery
Natural Earth Data
GeospatialPublic domain map dataset created by cartographers and GIS specialists worldwide.
OpenAerialMap
GeospatialCommunity-driven open imagery repository of drone, aerial, and satellite imagery.
OpenStreetMap
GeospatialCollaborative open map of the world with searchable places and features.
Best for: Open map data and place search
OpenTopography
GeospatialNSF-funded portal facilitating community access to high-resolution topographic data.
Overpass Turbo
GeospatialInteractive query tool mining OpenStreetMap data with custom filters and instant map rendering.
Sentinel Hub EO Browser
GeospatialSatellite imagery discovery tool featuring high-resolution Copernicus Sentinel and Landsat data.
SOAR.earth
GeospatialGlobal mapping platform combining open satellite, aerial, and drone imagery feeds.
USGS EarthExplorer
GeospatialUSGS EarthExplorer is the US Geological Survey's free web tool for searching and downloading satellite imagery, aerial photography, elevation models and other remote-sensing data.
Best for: Landsat and historical satellite imagery
USGS The National Map
GeospatialUSGS topographic mapping portal providing public GIS data layers and 3D elevation products.
World Imagery Wayback
GeospatialInteractive digital archive allowing users to travel back in time through historic satellite imagery.
Baidu Image Search
Image, Video & AudioChina's leading visual search engine indexing Asian web imagery and commercial media.
BBC Sound Effects Archive
Image, Video & AudioArchive of historical BBC sound recordings available for non-commercial and research use.
Bing Visual Search
Image, Video & AudioMicrosoft visual search engine with object isolation and reverse web image lookup.
Europeana Sounds
Image, Video & AudioDigital sound archive preserving European audio heritage from national broadcast collections.
Flickr Commons
Image, Video & AudioPublic domain photographic archive contributed by world museums and national libraries.
Free Music Archive
Image, Video & AudioInteractive audio library offering legal music downloads across hundreds of musical genres.
Freesound
Image, Video & AudioCollaborative database of Creative Commons audio clips.
Best for: Creative Commons sound recordings
Google Images
Image, Video & AudioWorld's largest visual search engine supporting reverse image lookup and visual entity discovery.
Internet Archive Moving Images
Image, Video & AudioDigital video library offering millions of free downloadable historical films and broadcasts.
Internet Archive Old Time Radio
Image, Video & AudioExtensive collection of historic radio broadcasts from the golden age of broadcasting.
Library of Congress Prints & Photographs
Image, Video & AudioCatalogue of over 14 million historical prints, photographs, and drawings at the Library of Congress.
NASA Image and Video Library
Image, Video & AudioOfficial public search portal for NASA space flight media, photography, and audio.
Openverse
Image, Video & AudioWordPress project that searches openly licensed images and audio.
Best for: Openly licensed images and audio
Pexels Free Stock Search
Image, Video & AudioFree stock photo and video platform offering high-resolution media with open licensing.
Pixabay Search Engine
Image, Video & AudioCreative community sharing copyright-free images, videos, audio, and vector graphics.
Smithsonian Open Access Media
Image, Video & AudioDigital collections of the Smithsonian Institution released into the public domain under CC0.
TinEye
Image, Video & AudioTinEye is a reverse image search engine. Upload an image or paste its URL and it finds where that image, or modified versions of it, appears online.
Best for: Tracing an image back to earlier copies
Unsplash Photo Search
Image, Video & AudioCommunity photography platform providing millions of high-resolution images for free use.
Wikimedia Commons
Image, Video & AudioMedia repository of over 100 million freely usable files.
Best for: Free-licensed photos, video and audio
Yandex Visual Search
Image, Video & AudioHigh-precision reverse image search engine renowned for identifying individuals and location landmarks.
AllYouCanRead
News, Blogs & CommunityComprehensive global directory connecting researchers to local newspapers in 200 countries.
ANNO Historical Newspapers
News, Blogs & CommunityDigital newspaper reading room of the Austrian National Library with millions of historical pages.
Arctic Shift Reddit Search
News, Blogs & CommunityPublic search engine querying historical Reddit posts, comments, and deleted community threads.
Chronicling America
News, Blogs & CommunityLibrary of Congress database of digitized American newspapers from 1756 to 1963.
Best for: Historic US newspapers
Chronicling America Directory of US Newspapers
News, Blogs & CommunityAuthoritative bibliographic directory tracking every newspaper published in the US.
CrowdView
News, Blogs & CommunitySearch engine focused on forums, Reddit and community discussions.
Best for: Forum and community discussions
Europeana Historic Newspapers
News, Blogs & CommunityCurated digital news portal bringing together historical newspapers from European institutions.
GDELT Project Database
News, Blogs & CommunityMassive open database monitoring world broadcast, print, and web news in over 100 languages.
Google News Archive
News, Blogs & CommunitySearchable archive of historical digitized print newspapers from global publications.
Hacker News Search
News, Blogs & CommunityFull-text search of Hacker News stories and comments.
Best for: Technology discussions and launches
Media Cloud
News, Blogs & CommunityOpen-source research platform analyzing news media ecosystems, framing, and public debate.
NewsAPI Search
News, Blogs & CommunitySearch engine and developer API tracking breaking news articles and historical headlines.
NewspaperArchive
News, Blogs & CommunityHistorical newspaper database indexing publications from 1607 to the present day.
Paperboy Online Newspapers
News, Blogs & CommunityCurated portal delivering direct links to English-language and foreign daily newspapers.
ProQuest Historical Newspapers Index
News, Blogs & CommunityDigital archive indexing premier global newspapers from early publication to the recent past.
The Old Bailey Online
News, Blogs & CommunityFully searchable resource detailing trials held at London's central criminal court.
Trove
News, Blogs & CommunityNational Library of Australia search across newspapers, books, images and archives.
Best for: Australian newspapers and archives
Trove Historic Australian Newspapers
News, Blogs & CommunityFree full-text digital newspaper database maintained by the National Library of Australia.
Wikipedia Current Events Portal
News, Blogs & CommunityCommunity-curated chronicle of world news events backed by multi-source news citations.
World Newspaper Archive
News, Blogs & CommunityCenter for Research Libraries partnership preserving historical international newspapers.
Bluesky Search
Social MediaBuilt-in search of public posts and accounts on Bluesky.
Best for: Public Bluesky posts
Disboard Discord Server Search
Social MediaPublic listing and search directory indexing thousands of Discord community servers by tag.
Farcaster Social Search
Social MediaSufficiently decentralized social network protocol indexing community discussions.
Lemmy Fediverse Search
Social MediaFederated, open-source link aggregator and discussion platform running across independent servers.
LinkedIn People & Company Search
Social MediaWorld's largest professional networking platform indexing millions of professionals and corporate entities.
Mastodon Global Search
Social MediaOpen, decentralized microblogging network operating on the ActivityPub protocol.
Medium Story Search
Social MediaOpen publishing platform indexing articles by independent journalists, thinkers, and technical experts.
Pinboard Search
Social MediaPrivacy-focused, fast bookmarking service indexing public web bookmarks and community tags.
Pinterest Visual Search
Social MediaVisual search engine for discovering recipes, home inspiration, design concepts, and infographics.
Quora Knowledge Search
Social MediaQ&A platform connecting questions with answers from subject-matter experts and experienced practitioners.
Reddit Advanced Search
Social MediaWorld's largest community discussion platform indexing millions of topical message boards.
Social Searcher
Social MediaSearches public posts and mentions across several social networks.
Best for: Public social media mentions
SoundCloud Track & Artist Search
Social MediaGlobal open audio platform indexing millions of independent musical tracks and podcasts.
Substack Newsletter Search
Social MediaNewsletter publishing platform connecting readers to independent journalists and writers.
Telegram Directory Search (Lyzem)
Social MediaLyzem is a free Telegram search engine that finds public channels, groups, bots and posts from your browser, without needing a Telegram account.
Telemetr Analytics Search
Social MediaTelegram analytics and channel discovery platform tracking audience metrics and viral posts.
Threads Web Search
Social MediaText-based conversational platform for sharing public thoughts, news, and topic discussions.
TikTok Creative Search
Social MediaGlobal short-form video discovery engine tracking trending audio, cultural trends, and hashtags.
Twitter / X Advanced Search
Social MediaAuthoritative real-time search engine for public microblogging discussions and breaking news.
YouTube Video & Channel Search
Social MediaPremier video-sharing platform indexing billions of video transcripts and live streams.
BASE Academic Metasearch
MetasearchOne of the world's most voluminous academic search engines indexing over 300 million documents.
Disconnect Metasearch
MetasearchSecure query router proxying searches across Google, Bing, and DuckDuckGo anonymously.
Dogpile
MetasearchVeteran metasearch engine fetching and cross-referencing results from leading search engines.
eTools.ch
MetasearchSwiss metasearch engine combining results from several sources without tracking.
Best for: Swiss privacy metasearch
Excite
MetasearchClassic internet portal providing multi-source web search and news aggregation.
Info.com
MetasearchMetasearch engine designed to aggregate search results across major commercial search engines.
Ixquick Classic
MetasearchThe world's first privacy-certified search engine that pioneered unlogged query proxying.
MetaGer
MetasearchGerman non-profit metasearch engine with anonymous result opening.
Best for: Non-profit private metasearch
MonsterCrawler
MetasearchClean metasearch engine aggregating top search queries from primary search engines.
Moodle Metasearch
MetasearchCentral open educational repository indexing courses, activities, and learning resources.
OneSearch
MetasearchConsumer privacy search engine delivering encrypted web search results without profiling.
Scilit Scientific Metasearch
MetasearchComprehensive scientific indexing database linking articles, preprints, and open PDFs.
Search.ch
MetasearchNational Swiss metasearch engine and directory service connecting web and telephone databases.
Swisscows Metasearch
MetasearchPrivacy-first Swiss search engine relying on semantic data intelligence without tracking.
The Lens Metasearch
MetasearchOpen global cyberinfrastructure linking patents, scholarly works, and biological sequences.
WebCrawler
MetasearchHistoric search engine delivering combined web, image, video, and news search results.
WolframAlpha Metasearch
MetasearchDefinitive computational engine computing objective answers from curated data.
YaCy Metasearch Gateway
MetasearchDecentralized P2P metasearch node aggregating distributed web indices.
ZapMeta
MetasearchInternational metasearch engine consolidating web search results into comparative categories.
No resources match these filters.
What is a specialized search engine?
A specialized search engine focuses on one type of content or one subject — scholarly literature, clinical studies, legislation, company filings, archived web pages or official statistics. Its index, metadata and filters are designed for that content, so it often finds sources that general web search engines rank poorly or cannot reach because they sit inside databases.
Example: searching “metformin cardiovascular outcomes” in a general web search engine mixes news and health sites; the same query in PubMed returns indexed clinical literature you can filter by study type and date.
General vs specialized search engines
| Feature | General search engines | Specialized search engines |
|---|---|---|
| Content scope | The open web | One subject or content type |
| Source quality | Mixed; ranked by popularity signals | Curated or authoritative collections |
| Filters | Date, language, file type | Field-specific: study type, court, filing form, dataset |
| Best use | Orientation and general information | Professional, academic and investigative research |
| Examples | Google, Bing | Google Scholar, PubMed, SEC EDGAR, Wayback Machine |
Using AI search for research
AI answer engines can help you frame a question and discover terminology, but they summarize sources and can misstate them. Use them to orient, then confirm facts in a specialized database and cite the original source, not the AI answer.
Browse AI research tools →How AOFIRS reviews resources
Listings are checked against official documentation. Ratings are documented desk reviews scored on seven weighted criteria: usefulness 25%, reliability 20%, features 15%, ease of use 15%, transparency 10%, privacy 10%, value 5%. Defunct, parked and consumer-only sites are removed. Resources without a completed review show “Not Yet Rated”.
Read our editorial policy →Suggest a search engine or report an error
Know a specialized resource we should include, or spotted an outdated detail? Send the resource name, its official website and what should change. AOFIRS does not sell listings or rankings.
Submit a suggestion →How to choose the right search engine
Start from the research task: the type of source you need, who publishes it, and whether you need full text, metadata or raw data. Our guide walks through each research type step by step.
Read the guide →Frequently asked questions
What is a specialized search engine?
A specialized search engine indexes one type of content or one field — for example scholarly papers, court records, company filings, archived web pages or statistical datasets. Because its index and filters are built for that content, it usually returns more relevant, better-sourced results than a general web search engine for professional research tasks.
How is a search engine different from a research database?
A search engine crawls and indexes content from many sources. A research database holds a curated collection, often maintained by a single publisher or agency (PubMed, SEC EDGAR, ERIC). Many resources in this library are search interfaces to databases; each listing states its operator so you know where the data comes from.
Are AI answer engines the same as search engines?
No. AI answer engines such as Perplexity or ChatGPT search generate written answers from retrieved sources. They are useful for orientation, but you should open and check the cited sources. AOFIRS lists AI answer engines separately in the AI Tools section and does not classify every AI product as a search engine.
How does AOFIRS rate search engines?
Ratings are documented desk reviews based on each provider’s official documentation, scored on seven weighted criteria: usefulness 25%, reliability 20%, features 15%, ease of use 15%, transparency 10%, privacy 10% and value 5%. A resource shows “Not Yet Rated” until a review is completed.
Does AOFIRS accept payment for listings?
No. Listings and ratings are editorial. AOFIRS does not sell placement, and resources are not ranked by sponsorship.
How can I report an error or suggest a search engine?
Use the AOFIRS contact page. Include the resource name, its official website and what should change. Corrections are checked against the provider’s own documentation before the listing is updated.
