Wikipedia:List of aids to Internet research

This page is designed to supplement Reference desk and its seven subpages. It can have a number of uses.
 * It provides resources to editors who have questions.
 * It provides resources to editors who wish to answer the questions of other editors.
 * It provides resources to editors who wish to start or expand articles in Wikipedia.

The following points are useful to anyone consulting this list.
 * Inclusion on this list of online reference desks is not an endorsement.
 * Organization of entries follows the list of Dewey Decimal classes.

These are the seven subpages of the Reference desk, and corresponding Dewey Decimal numbers.
 * Reference desk/Computing (000, 004, 005, 006)
 * Reference desk/Entertainment (780–799)
 * Reference desk/Humanities: Philosophy and psychology (100–199), Religion (200–299), Social sciences (300–399), and Literature (800–899)
 * Reference desk/Language (400–499)
 * Reference desk/Mathematics (510–519)
 * Reference desk/Science (500–509, 520–599) and Technology (600–699)
 * Reference desk/Miscellaneous (700–779, 900–999)

Computer categories in general web directories

 * Computers in the Best of the Web Directory
 * Open Directory - Computers
 * Computing and Computer Science | The WWW Virtual Library (See: World Wide Web Virtual Library.)
 * Computers and Internet in the Yahoo! Directory

Directories of computer websites

 * Computer Directory :: Hand Edited
 * the Computer Portal.com - The Best Computer Sites!
 * Computer Directory
 * Online Computer Directory, Communications, Database, Programming

Websites of operating systems

 * (See also: List of operating systems, Category:Operating systems.)


 * Microsoft Corporation: Software, Smartphones, Online, Games, Cloud Computing, IT Business Technology, Downloads (See: Category:Microsoft.)
 * Apple (See: Category:Apple Inc.)
 * Linux.com | The source for Linux information (See: Category:Linux.)
 * Homepage | Ubuntu (See: Category:Ubuntu (operating system).)

International computing standards organizations

 * (See also: List of technical standard organisations, Category:Standards organizations.)


 * Unicode Consortium
 * World Wide Web Consortium (W3C)
 * ICANN | Internet Corporation for Assigned Names and Numbers
 * Internet Society (ISOC)

Typing foreign characters

 * TypeIt - Type accent marks, diacritics and foreign letters online
 * Online Keyboard • Multilingual • LEXILOGOS &gt;&gt;
 * All about typing (Scroll down to "Contents".)
 * Foreign Language Characters, Diacritics, Accent Marks, Computers, KeyBoard Help, kbh
 * Penn State Computing with Foreign Symbols - Home
 * Unicode character pickers
 * Help Topics - Tavultesoft KeymanWeb Help
 * Unicode Web Browser Keyboard
 * Quillpad - Typing in Hindi has never been easier (also: Bengali, Gujarati, Kannada, Malayalam, Marathi, Nepali, Punjabi, Tamil, Telugu)
 * Virtual Keyboard

Directories of application software

 * (See also: Application software, Category:Application software.)


 * Apple - Web apps - All Categories
 * MakeUseOf Directory
 * iPhone apps and iPad apps | Appolicious &trade; App Directory
 * Twitdom &raquo; The Twitter Applications Directory
 * Dropbox - Apps - Simplify your life

Social sciences (300–399)

 * (See also: Category:Society, Category:Society-related lists.)

Society categories in general web directories

 * Society in the Best of the Web Directory
 * Open Directory - Society
 * Society and Culture in the Yahoo! Directory

Social sciences, sociology, and anthropology (300–309)

 * Main Page - NativeWiki
 * Home - Population Reference Bureau (See: Population Reference Bureau.)
 * Intentional Communities Directory - ecovillages communes cohousing (See: Category:Intentional communities.)

Directories of statistics

 * UNdata
 * Google Public Data Explorer
 * ChartsBin.com - Visualize your data
 * kmlfactbook.org
 * Many Eyes

Directories of small businesses

 * (See also: Category:Small business.)


 * Small Business Directory &#045; Local &#047; World wide &#045; Small Business Big World &#045; Almost Free Listings for Small Businesses
 * Small Business Directory -- Search businesses online
 * asmallbusinessdirectory.com
 * Business Directory, Business Directories, Small Business Directory

Directories of thrift stores

 * (See also: Charity shop.)


 * TheThriftShopper.Com National Thrift Store Directory Listing Charity Resale Shops
 * Resale Shop Directory, Consignment Shop List, Thrift Store Locator, Shop Clothing Online
 * Consignment, ConsignmentShops.com, a list of consignment shops, resale shops, thrift shops and antique shops.

Labor economics (331)

 * Recruiters and Headhunters - find executive search firm, headhunter or executive recruiter
 * Dictionary of Occupational Titles DOT - Job Descriptions - www.occupationalinfo.org
 * Non Profit Organizations Search | Find Non Profit Organizations | NonProfitList.org (United States)
 * Nonprofit Career Network
 * Volunteer, work, intern, organize, hire and connect. Change the world - idealist.org
 * Home Page * ResumeWiki - Community Edited Resumes
 * Free Resumes Directory - Sample Resumes - The complete collection of Resumes
 * Directory of Resumes CV - Directory of jobs, careers and employment opportunities.
 * LabourStart: Where trade unionists start their day on the net. (multilingual)

Cooperatives (334)

 * (See also: Cooperative, Category:Cooperatives.)


 * Coop Directory Service: Find A Natural Food Coop Near You

Miscellaneous economics websites

 * ShoppingCenters.com - Your Source for shopping center, mall, and retail information
 * Etsy - Your place to buy and sell all things handmade, vintage, and supplies
 * trendwatching.com: Consumer trends and insights from around the world
 * Springwise | New business ideas, trends and innovation

Law (340–349)

 * (See also: Index of law articles, Category:Law, Category:Legal websites.)

Legal categories in general web directories

 * Law in the Best of the Web Directory
 * Open Directory - Society: Law
 * Law | The WWW Virtual Library
 * Law in the Yahoo! Directory

Directories of legal websites

 * Lawyer, Lawyers, Attorney, Attorneys, Law, Legal Information - FindLaw
 * The Legal 500 - The Clients Guide to the best Law firms, top Lawyers, Attorneys, Advocates, Solicitors and Barristers.

Miscellaneous legal websites

 * Judgepedia
 * Lawlibrary

Public administration (350–359)

 * USA.gov: The U.S. Government's Official Web Portal
 * U.S. Government Telephone and E-mail Directories: USA.gov

Education (370–379)

 * (See also: Category:Education, Category:Education-related lists, Category:Educational websites, Comparison of educational websites that are directed to persons 17 or under.)

Education categories in general web directories

 * Education in the Best of the Web Directory
 * Open Directory - Reference: Education
 * Education | The WWW Virtual Library
 * Education in the Yahoo! Directory

Directories of education websites

 * Find Colleges in USA - Find Colleges in Canada - Find Colleges in United Kingdom - Find Colleges Worldwide - Find Schools in USA
 * Online Accredited Degrees | College & University Education Courses
 * 4icu.org | World University Web Rankings (web rankings, NOT academic rankings)

Higher education (378)

 * (See also: Category:Lists of universities and colleges, Category:Universities and colleges.)

Directories of postsecondary institutions

 * Directory of Postsecondary Institutions: Volume I: Degree-Granting Institutions, 1997
 * Directory of Postsecondary Institutions: Volume II: NonDegree-Granting Institutions, 1997
 * Online Degrees and Programs from Accredited Online Schools, Colleges and Universities
 * Directory of Online Schools
 * Online Education | Edvisors
 * Online College Courses &amp; Degrees - Your Online Directory to Distance Education

College and university search engines

 * College & University Search Engines.
 * EducationUSA - Search for Colleges and Universities

Reviews of postsecondary institutions

 * College Reviews by Students for Students - College Prowler
 * GetEducated.com | Review, Rate, Rank &amp; Compare Online Colleges &amp; Degrees

Miscellaneous websites about higher education

 * Students

Special education

 * International Journal of Special Education
 * Connections Kids Special Needs Directory (Dallas, TX)
 * Special Needs Directory (San Francisco, CA)
 * Special Needs Kids, Childrens Disability Products, information and services (in the UK)

Directories of lesson plans

 * Lesson Plans Directory - Free Lesson Plans Worksheets, and Activities
 * Free Lesson Plans for Teachers - Math Lesson Plans - Science Lesson Plans

Miscellaneous education websites

 * Free PD Resources for Teachers: Teacher Professional Development Sourcebook Directory
 * Homework Hero: Homework Assignments Online
 * WikiEducator
 * Memorize.com - Learn and Remember
 * WhichCourse.com - Comparative directory of EFL/ESL teacher training and development courses

Language (400–409)

 * (See also: Lists of languages, Category:Lists of languages, Category:Language, Category:Languages.)

Language categories in general web directories

 * Social Sciences Language and Linguistics in the Best of the Web Directory
 * Open Directory - Science: Social Sciences: Linguistics
 * Languages and Linguistics | The WWW Virtual Library
 * Linguistics and Human Languages < Social Science in the Yahoo! Directory

Directories of language websites

 * Travel Directory & Language Directory
 * The Language Directory - Resources for learning languages
 * Language and Resources Index Page
 * Top20Languages.com - Online Directory for Languages.
 * Free Online Lessons - Language Directory
 * The Best Language Learning Resources, Tips and Advice Available on the Net
 * Search - Language Course Finder
 * Learn Indian languages

Directories of websites for learning specific languages

 * (See also: Category:Language acquisition.)


 * English Schools Worldwide - Guide to English Language Schools & ESL Programs
 * ESL Links - Learning English (See: Category:English as a second or foreign language.)
 * http://www.spanish-language.org/directory/
 * Chinese Language Link Directory

Directories of text corpora

 * (See also: Category:Corpus linguistics.)


 * Corpus resources: Corpora and electronic text databases
 * Corpora List
 * Corpora
 * Google Ngram Viewer
 * CORPORA: 45-425 million words each: free online access

Linguistics (410–419)

 * (See also: Category:Linguistics, Category:Linguistics lists.)

Writing systems (411)

 * (See also: Category:Writing.)


 * Symbols.Net - Directory of Signs, Glyphs and Symbols
 * Omniglot - the guide to languages, alphabets and other writing systems
 * Typedia: A Shared Encyclopedia of Typefaces

Dictionaries (413)

 * (See also: Lists of dictionaries, Category:Dictionaries, List of online dictionaries, Category:Online dictionaries, Category:Glossaries, Category:Wikipedia glossaries.)

Directories of dictionaries and glossaries

 * A-Z-Dictionary.com
 * Glossary Directory - Glossaries & Dictionaries Directory
 * alphaDictionary * Free English Online Dictionary * Word Games
 * OmegaWiki (multilingual dictionary)

Phonology (414)

 * (See also: Category:Phonetics, Category:Phonology.)

Pronunciation websites

 * Forvo: the pronunciation guide. All the words in the world pronounced by native speakers
 * Free online Dictionary of English Pronunciation - How to Pronounce English words
 * Free Online Pronunciation Guides with Instant Sound: English + 9 Languages

Miscellaneous languages (499)

 * Main Page - UniLang Wiki
 * Lojban

Directories of language websites by global region

 * (See also: Category:Languages by geographical region.)


 * Learn Indian languages
 * AfricanLanguages.com - African Languages info
 * Native American Language Net: Preserving and promoting indigenous American Indian languages
 * Languagegeek : Native Languages
 * Australian languages
 * Welcome to the PNG Language Resource site

Endangered languages

 * (See also: Lists of endangered languages, Category:Endangered languages.)


 * Enduring Voices Project, Endangered Languages, Map, Facts, Photos, Videos -- National Geographic
 * Living Tongues Institute For Endangered Languages
 * The Center for Advanced Research on Language Acquisition (CARLA) : Less Commonly Taught Languages

Online language identifiers

 * (See also: Language identification, Language recognition chart.)


 * Automatic online language identifier (102 languages supported)
 * Language Identifier, Language Classifier, Language Guesser

Directories of translation and translators

 * (See also: Translation, Category:Translation, Category:Translators.)


 * Translators, Translation Services, Translation Jobs - Translatorsbase.com
 * Translation portal: translation jobs, translation agencies, freelance translators and much more
 * TranslatorsCafe.com — a Place for Translators, Interpreters, Voice Talents, Other Language Professionals and Their Clients.
 * Freelance translators & Translation companies | ProZ.com
 * GoTranslators: the specialised translation directory. A translator for every occasion.
 * Directory of Translators - Qualified, Professional Translators

Language websites, miscellaneous

 * Omniglot - the guide to languages, alphabets and other writing systems
 * Ethnologue, Languages of the World (See: Ethnologue.)
 * Online Etymology Dictionary (See: Online Etymology Dictionary.)
 * OneLook Dictionary Search
 * WALS - The World Atlas of Language Structures (See: World Atlas of Language Structures.)
 * MuturZikin - Language maps of the World
 * Search - Language Course Finder
 * Digital Dialects language learning games
 * Google Ngram Viewer
 * OnlineStylebooks.com (a stylebook search engine)

Science (500–599)

 * (See also: Category:Science websites.)

Science categories in general web directories

 * Science in the Best of the Web Directory
 * Open Directory - Science
 * Natural Sciences and Mathematics | The WWW Virtual Library
 * Science in the Yahoo! Directory

Directories of science websites

 * Science Search Engine &amp; Directory | SciSeek
 * Element List - Science Websites for Scientists
 * Best Science Directory Niche Directory of Top Sites on Science, Technology, Health
 * Science Central
 * SRW Directory | Science, Engineering, and Technology Resources, Reference Information, Products and Services Directory
 * Science-Directory.net
 * SRW Directory | Science, Engineering, and Technology Resources, Reference Information, Products and Services Directory

Mathematics (510–519)

 * (See also: Category:Mathematics, Category:Mathematics-related lists, Mathematics Subject Classification, Category:Mathematics websites.)

Mathematics categories in general web directories

 * Math in the Best of the Web Directory
 * Open Directory - Science: Math
 * Mathematics in the Yahoo! Directory

Directories of mathematical websites

 * The Math Forum Internet Mathematics Library
 * Math on the Web Index
 * MathGuide
 * Mathematics Resources on the Internet - (Math Links by Bruno Kevius)

Web pages about mathematical mistakes

 * (See also: Mathematical fallacy.)


 * Glossary of Mathematical Mistakes
 * The Glossary of Mathematical Mistakes
 * mathmistakes.info Home Page
 * Common Errors in College Math

Mathematics websites, miscellaneous

 * The On-Line Encyclopedia of Integer Sequences&trade; (OEIS&trade;) (in many languages)
 * The Prime Pages (prime number research, records and resources)

Astronomy and allied sciences (520–529)

 * (See also: Category:Astronomy websites.)

Directories of astronomy websites

 * astronomyLINKS - astronomy and space directory, links, booksmarks and more.
 * Astronomicals Astronomy Directory: Main

Physics (530–539)

 * (See also: Category:Physics lists, Category:Physics.)

Directories of physics websites

 * Top20Physics.com - Online Directory for Physics Education.
 * spectrum of physics - directory
 * Physics Online Resources

Life sciences (570–579)

 * (See also: List of biology websites, Category:Biology websites.)

Directories of biology websites

 * Biology Directory - Biology Resources Online
 * BioScience Links
 * Life Science Log ("Most important weekly life sciences news headlines")

Species search engines

 * iSpecies ("A species search engine")
 * Gwannon.com - The natural species search engine

Directories of botany websites

 * Know Plants

Directories of environmental websites

 * (See also: List of environmental websites, Category:Environmental websites.)


 * Environment Web Directory
 * THE DIRECTORY OF ENVIRONMENTAL WEB SITES, ONLINE ABRIDGED EDITION 2011
 * Green Directory, Solar Power, Energy Efficiency, Climate Change, Global Warming - EcoWho
 * Environment Directory - DotEnvironment.net
 * The Big Eco Directory - The best eco-directory for all things green.
 * (directory of acoustic ecology websites) ACOUSTIC ECOLOGY | Home
 * (directory of climate change websites) Climate Ark: Climate Change and Global Warming Portal, News Feed and Search
 * (directory of radioactive waste websites) RadWaste.org

Search engines for environmental websites

 * Green Maven- The Green Search Engine
 * EcoEarth.Info Environment Portal
 * Ecosia - The green search

Science websites, miscellaneous

 * The International Plant Names Index - home page
 * Iowa State Weed Science Online (by: Iowa State University, Ames, IA)
 * FishBase : A Global Information System on Fishes
 * Avibase - The World Bird Database (in many languages)

Technology (600–699)

 * (See also: Category:Technology websites.)

Directories of technology websites

 * Hi-Tech Directory - High Technology and Sciences Business Web Site Listings

Medical sciences; medicine (610–619)

 * (See also: Category:Medical websites.)

Directories of medical websites

 * Online Healthcare and Medical Portal - directory index for medical resources, healthcare and health blogs
 * Health Information Directory | Medical Websites &amp; Fitness Resources
 * Your Source for all Chinese Medicine and Acupuncture Needs
 * Medicine Directory | Medicine Directory, Medicine Guide, Medication Information
 * Medical Directory
 * Healthcare and Medical Directory
 * Medical and General Health Directory
 * Medical Directory
 * eHealth Sites Health Directory | Guide to Health & Wellness Resources
 * HealthEcho.com - Guide to reliable health information
 * davidrothman.net &raquo; List of Medical Wikis

Directories of online medical journals

 * LONG LIST Online Medical Journals, American Medical Journals, some free
 * Free Medical Journals | by Amedeo.com

Agriculture (630–639)

 * (See also: Category:Agriculture-related lists, Category:Agriculture.)

Directories of agricultural websites

 * Agsites is the largest Outdoor World, Agriculture and Weather information directory

Web pages about mistakes in science and engineering

 * (See also: List of science and engineering blunders.)


 * Whoops! Blunders and Mistakes of Science and Engineering.
 * Science Mistakes: When Science Goes Wrong: Science Channel
 * Why Most Published Research Findings Are False by John P. A. Ioannidis

Medical resources, miscellaneous

 * Retraction Watch
 * Grogono's Acid-Base Tutorial
 * Medical Mnemonics .com: World's Database of Medical Mnemonics
 * PogoFrog... a Medical Search Engine (" jumps over the layman-focused clutter")
 * UpToDate Inc. ("Helping Clinicians Provide the Best Patient Care")
 * Main Page - wikidoc (in English, Spanish, French, Polish, Russian, Romanian, Simplified Chinese, and Turkish)
 * Wrong Diagnosis
 * Types of Medical Mistakes - WrongDiagnosis.com

Arts (700–799)

 * (See also: Category:Arts, Category:Arts-related lists, Entertainment, Category:Entertainment, Category:Entertainment websites.)

Entertainment categories in general web directories

 * Arts Information and Resources in the Best of the Web Directory
 * Open Directory - Business: Arts and Entertainment
 * The Arts | The WWW Virtual Library
 * Entertainment in the Yahoo! Directory

Directories of entertainment websites

 * iBaller Entertainment Directory - High Quality Entertainment Sites
 * Music-Sites.net - Your Music-Directory
 * Music Website Directory - Links To Bands, Concerts, Instruments And More
 * MusicFanLinks : A directory with 32,000 music websites for 3,300 artists and bands
 * Celebrity Websites Directory

Directories of photography websites

 * (See also: Category:Photography websites.)


 * Photo Links - Photography Directory Project
 * Library of Photography. A Photography Resource Site.
 * Photographic Libraries
 * photolinks.ch : photography links : photographer websites : photo directory
 * Photography Websites
 * Photographers Index is the Internet Directory of Photographers Worldwide

Music (780–789)

 * (See also: Category:Music, Category:Music-related lists, Category:Music portals.)

Music categories in general web directories

 * Music in the Yahoo! Directory
 * Open Directory - Arts: Music

Directories of music websites

 * MusicMoz - Open Music Project
 * Classic Cat - the free classical music directory
 * Guitar-directory.com free score for guitar, tabs, notes (in English and French)
 * Musicians Gallery - Two decades of service
 * Children's Music Workshop - Music Education Services

Virtual piano keyboards

 * (See also: Musical keyboard, Category:Keyboard instruments.)


 * VIRTUAL KEYBOARD - PIANO
 * Flash Piano - The Method Behind the Music

History (900–909)

 * (See also: Category:History websites.)

History categories of general directories of websites

 * History in the Yahoo! Directory
 * Open Directory - Society: History

Directories of history websites

 * Best of History Web Sites

Directories of genealogy websites

 * (See also: Category:Genealogy websites.)


 * Welcome to Cyndi's List

Geography and travel (910–919)

 * (See also: Category:Geography, Category:Geography-related lists, Category:Travel websites.)

Directories of geography websites

 * Geography World
 * The Internet Geographer - Web Resources for School Geography

Travel and tourism categories of general directories

 * Open Directory - Recreation: Travel
 * Travel and Transportation in the Yahoo! Directory

Directories of travel and tourism websites

 * Travel and Tourism Directory
 * Travel Directory Tourism Directory Vacation Directory Hotels Tours and agents websites listings
 * International Travel Directory Search Website | Free Submit Vacation Web Site URL | Packages and Guides
 * Travel-Directory.org - International Tourism and Travel Guide
 * Tourism Offices Worldwide Directory
 * Europe Travel Directory | Travel and tourism websites Europe | Best travel banner advertising

Dynamic maps

 * Earth and Moon Viewer
 * Wind Map (contiguous United States)
 * Plane Finder – Flight Radar | Aircraft Tracker | Live Flight Tracking