This page and its 10 subpages are designed to supplement Wikipedia:Reference desk and its seven subpages. These 11 pages can have a number of uses.

• They provide a list of alternative places for Wikipedia visitors to ask questions.
• They provide a list of resources to help Wikipedia respondents to find answers to questions.
• They provide a means to assist Wikipedians and others in comparing the quality of reference service provided in different places.

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.

• Wikipedia:List of online reference desks/Directories
• Wikipedia:List of online reference desks/General
• Wikipedia:List of online reference desks/Computing (000, 004, 005, 006)
• Wikipedia:List of online reference desks/Entertainment (780–799)
• Wikipedia:List of online reference desks/Humanities: Philosophy and psychology (100–199), Religion (200–299), Social sciences (300–399), and Literature (800–899)
• Wikipedia:List of online reference desks/Language (400–499)
• Wikipedia:List of online reference desks/Mathematics (510–519)
• Wikipedia:List of online reference desks/Science (500–509, 520–599) and Technology (600–699)
• Wikipedia:List of online reference desks/Miscellaneous (700–779, 900–999)
• Wikipedia:List of online reference desks/Non-English

• List of question-and-answer websites
• User:John Carter/Reference sources
• User:John Carter/Reference works
• Wikipedia:List of aids to Internet research

Wikipedians[edit]

(Questions can sometimes be given specialized attention by individual Wikipedians, or by groups of members of specific WikiProjects, especially if the questions pertain to improving Wikipedia. An editor can visit a relevant talk page to post a question, or to link to a discussion in progress on one of the subpages of Wikipedia:Reference desk.)

• Category:Wikipedians
• Category:WikiProjects
• Wikipedia:Database reports/WikiProjects by changes

Articles about online reference desks[edit]

• Wikipedia Reference Desk
• The Future of Question and Answer Sites - TNW United States (by: The Next Web)
• 20 years before Google existed, N.Y. Public Library offered a human Google—Mother Nature Network (October 25, 2016)

Change detection and notification[edit]

(See also: Change detection and notification, Category:Change detection and notification.)

• ChangeDetection - Know when any web page changes
• ChangeDetect - Web Page Monitoring - Free Online Service
• dasPing: start
• WatchThatPage - Monitor web pages extract new information

Copyright and plagiarism[edit]

(See also: Copyright, Category:Copyright law, Plagiarism, Category:Plagiarism.)

• Stanford Copyright & Fair Use Center (by: Stanford University, Stanford, CA)
• 10 Big Myths about copyright explained (by: Brad Templeton)
• Public Domain Sherpa - your guide to finding copyright-free works
• Plagiarism Today
• Is it Plagiarism or Copyright Violation - Coaching in Writing for Internet

Digital libraries[edit]

(See also: List of digital library projects, Category:Digital libraries.)

• The WWW Virtual Library (See: World Wide Web Virtual Library.)
• World Digital Library Home (See: World Digital Library.)
• ICDL - International Children's Digital Library (See: International Children's Digital Library.)
• Refdesk.com
• ReferenceDesk.org
• Martindale's "The Reference Desk"

Digital libraries of websites by Dewey Decimal number[edit]

• Dewey Browse
• DeweyDigger
• MGPL Webrary® - Webrary Links Menu (by: Morton Grove Public Library, Morton Grove, IL)
• KidsClick! Web Search
• Ready Reference - A selection of Web resources (by: Lakewood Public Library, Lakewood, Ohio)
• A Research Guide for Students with Virtual Library arranged by Dewey
• Websites by Dewey number | The Foote School Perrine Library (by: Foote School, New Haven, CT)
• Websites by Dewey Classification
• Reference Sites (by: Rainbow City Public Library, Rainbow City, Alabama)

Digital library categories in general web directories[edit]

• Digital Libraries in the Best of the Web Directory
• Digital Libraries in the Yahoo! Directory (See: Yahoo! Directory.)
• Open Directory - Reference: Libraries: Digital (See: Open Directory Project.)

Directories not in English[edit]

• Le guide des meilleurs sites
• Annuaire francophone NEToo, le top 10.000 du web francophone
• SegnaWeb: risorse Internet selezionate dai bibliotecari italiani - Home

Directories of alternative media[edit]

(See also: Category:Alternative media.)

• AlternativeNews.net - Best Alternative News Links
• independentmedia.ca: a directory of non-corporate journalism
• Citizen journalism directory
• Alltop - Top Citizen Journalism News
• Directory - Crowdsourcing.org

Directories of blogs[edit]

(See also: List of blogs, Category:Blogs.)

• Blogarama - The Blog Directory - Blogs And Blog Resources
• Blogs Directory - Blogs-Collection.com
• Blog Directory

Directories of books[edit]

(See also: Lists of books, Category:Books, Category:Lists of books, Category:Book websites, Category:Ebook suppliers.)

• Directory of FREE Online Books and FREE eBooks
• The Online Books Page (See: Online Books Page, by John Mark Ockerbloom, University of Pennsylvania Libraries, University of Pennsylvania, Philadelphia, PA.)
• The Used and Rare Books Directory
• E-Books Directory - Categorized Books, Short Reviews, Free Downloads
• Project Gutenberg - free ebooks (See: Project Gutenberg.)
• Published.com - A Free Book Directory. Discover The Best Books Today.

Directories of conferences[edit]

(See also: Category:Conferences.)

• AllConferences.Com Conventions Events Meetings
• Academic conferences worldwide - Conference Alerts

Directories of dictionaries and glossaries[edit]

(See also: Lists of dictionaries, Category:Dictionaries, Portal:Contents/Glossaries, Category:Glossaries, Category:Wikipedia glossaries.)

• A-Z-Dictionary.com
• Glossary Directory - Glossaries & Dictionaries Directory
• ObjectGraph LLC (several dictionaries)
• Dictionary, Encyclopedia and Thesaurus - The Free Dictionary (several dictionaries and encyclopedias) (See: TheFreeDictionary.com.)

Directories of dissertations[edit]

(See also: Thesis.)

• OATD – Open Access Theses and Dissertations
• Introduction - Theses Canada - Library and Archives Canada (by: Library and Archives Canada)
• Dissertation.com - Academic Dissertation Book & Media Publishers
• Education: Free Dissertations/Theses - Alcove 9: An Annotated List of Reference Websites (Main Reading Room, Library of Congress) (by: Library of Congress)
• ndltd (NDLTD = Networked Digital Library of Theses and Dissertations)
• Thesis Abstract | Dissertation Abstracts Thesis Library - Thesis Abstracts Online

Directories of documentary films[edit]

(See also: List of documentary films, Category:Documentary films.)

• Top Documentary Films - Watch Free Documentaries Online
• Main Page - Documentary Pedia

Directories of educational videos[edit]

(See also: List of educational video websites, Category:Educational websites.)

• videolectures.net - videolectures.net
• Educational Videos – The Best Educational Videos Online | Educational Videos Directory
• WatchKnowLearn - Free Educational Videos for K-12 Students (See: WatchKnowLearn.)
• EduTube Educational Videos | Learn something new every day
• Teach With Movies, Lesson Plans in History, English, Science for High School, Middle School and Elementary

Directories of forums[edit]

(See also: List of Internet forums, Category:Internet forums.)

• Directory of FORUMS
• Online web forums directory - Forum directory
• Forums Directory :: Forums Directory ForumsInfo.Com

Directories of libraries[edit]

(See also: List of libraries, Category:Libraries.)

• Libweb - Library WWW Servers - World Libraries Online
• Libdex – Worldwide index of library catalogues, libraries & books
• lib-web-cats: an International Directory of Libraries
• Public Libraries (United States)
• Directory of Special Libraries and Information Centers (by: Cengage Learning, Stamford, CT)

Directories of magazines[edit]

(See also: Lists of magazines, Category:Magazines.)

• Magazine Directory - Magazines Online
• Magazine Directory - A National Directory of Magazines. (United States)

Directories of mobile websites[edit]

(See also: Category:Mobile web.)

• Mobile Websites – Cantoni.mobi
• idibidi mobile website directory
• Mobile Directory and Mobile Website Design
• Mobile Directory
• Great Mobile Websites

Directories of museums[edit]

(See also: List of museums, Category:Museums, .museum.)

• Museums: Virtual Library museums pages (VLmp)
• MuseumRegister | an international directory of museums in all categories
• Search result in the .museum Registry (See: Museum Domain Management Association.)
• 1000s Of Museums Online : MuseumStuff.com (United States)

Directories of newspapers[edit]

(See also: Lists of newspapers, Category:Newspapers.)

• Thousands of newspapers on the Net
• Sur le web: Presse en ligne
• Newspapers - Newspaper & News Media Guide ABYZ News Links
• 4 International Media & Newspapers - world newspapers online
• Newseum | Today's Front Pages | Map View (See: Newseum.)
• Newseum | Today's Front Pages | Gallery View (See: Newseum.)
• Newspapers of the World - Newslink
• United States Newspapers
• Google News Archive Search (See: Google News Archive.)

Directories of open-access journals[edit]

(See also: Academic journal, Open access journal, Category:Academic journals, Category:Lists of academic journals.)

• DOAJ -- Directory of Open Access Journals (See: Directory of Open Access Journals.)
• JournalSeek - A Searchable Database of Online Scholarly Journals (See: JournalSeek.)

Directories of OpenCourseWare[edit]

(See also: Category:OpenCourseWare.)

• Princeton University: WebMedia - Lectures (See: Princeton University.)
• Free Online Course Materials | MIT OpenCourseWare (See: MIT OpenCourseWare.)
• Open Yale Courses (See: Open Yale Courses.)
• Harvard Open Courses for Free | Open Learning Initiative (See: Harvard Extension School.)

Directories of image-sharing websites[edit]

(See also: List of image-sharing websites, Category:Image sharing websites.)

• Photography Sites - Photography Websites - Photography Directory
• FreePhotoGallery: Photography Directory and Photography Search Engine

Directories of podcasts[edit]

(See also: List of podcatchers, Category:Podcasting.)

• PodcastDirectory.com | The big directory for you
• Podcast Directory : Podfeed.net
• PodcastAlley.com -- The place to find Podcasts

Directories of radio stations[edit]

(See also: List of radio stations, Category:Radio stations, Category:Radio spectrum.)

• Radio-Locator
• PublicRadioFan.com (See: Public Radio Fan.)
• RadioStationWorld - Radio Broadcast Directory and Listing of Radio Stations on the Web
• Radio Stations Streaming on the Internet (United States)
• HamDepot - Ham Radio Clubs | Amateur Radio Clubs (United States) (See: Amateur radio.)
• Shortwave Radio Stations and International Broadcasters (See: Shortwave radio.)
• ShortWaveRadio.com - The superlist of shortwave radio stations!

Directories of repositories[edit]

(See also: Repository (publishing), Category:Archival science.)

• OpenDOAR - Home Page - Directory of Open Access Repositories
• Welcome to the Registry of Open Access Repositories - Registry of Open Access Repositories (See: Registry of Open Access Repositories.)
• Repositories of Primary Sources (by: University of Idaho Library, University of Idaho, Moscow, ID)

Directories of search engines[edit]

(See also: List of search engines, Category:Internet search engines.)

• Find search engines from across the world with Search Engine Colossus
• Search Engines Directory,Search Engine of Web Directories,Search Engines List and Web directories List
• Comprehensive list of Search Engines - The Search Engine List

Directories of telephone numbers[edit]

(See also: Category:Telephone numbers.)

• Free White Pages - People Search - International Phone Books
• Country codes & international area codes - HowtoCallAbroad.com
• Pay Phone Directory (United States, Canada, and some other places)
• The Telephone EXchange Name Project
• Internet 800 Directory - Directory of free toll free (tollfree), 800,866,877 and 888 listings of businesses by company, number and type of industry, regardless of long distance carrier.
• Toll Free Directory | 800 Directory | National Tollfree Directory - Find a Toll Free Number
• Toll Free Phone Numbers Directory 800 888 Reverse Lookup
• Home - Wikipages.com ("a wikified yellow pages")
• Categories: NoPhoneTrees.com
• Phone Numbers, Shortcuts, Reviews & Customer Tips - Companies Worldwide - GetHuman.com
• Cell Phone Number | CellPhoneNumber.com
• Free Cell Phone Directory | Cell Phone Lookup & Reverse Cell Phone Lookup
• Mobile Phone Directory
• Yellow Pages Goes Green: Yellow Pages Directory Inc. (United States)
• Find Phone Numbers of Companies, Email Address, Chat Options, Shortcuts & Tips. - SeekNumber.com (United States)
• Search a Customer Care Number and other Contact Information to connect with Real Human. Get Genuine Customer Service Phone Number. Support Helpline - Ask2Human.com

Directories of web directories[edit]

(See also: List of web directories, Category:Web directories.)

• Web Directories List - 20,000 Up-to-date Directory Listings (free & paid).
• Best Web Directories - Free & Paid Directory Submission Rankings
• Web Directory List - Directory of Directories

Directories of web feeds[edit]

(See also: Web feed, RSS.)

• Rss Feeds Directory
• RSS feed Directory - Feedage.com
• Free Feeds Directory
• RS Feeds Directory - FREE listing - RSStop10.com

Directories of wikis[edit]

(See also: List of wikis, Category:Wikis.)

• Wikimedia Foundation (See: Wikimedia Foundation, Wikimedia wikis.)
• WikiIndex
• Wiki Directory - Wiki Spot
• Wiki Hosting Directory - Find the Best Wiki Hosting providers here
• Wiki Farms (See: Wiki hosting service.)

Directories of wireless access points[edit]

(See also: Hotspot (Wi-Fi), Category:Wireless access points.)

• Fon - Find Fon Hotspots Worldwide
• JiWire Global Wi-Fi Finder
• Wi-Fi ZONE™ Finder
• Wi-Fi Hotspot Directory | WLAN Hotspots - WiFi Hot Spots - Free Locations - Public Wireless Lan Internet Access
• free wi-fi hotspots wifi cafes coffee shops hotels airports RV Parks

Directories of world records[edit]

(See also: Category:Superlatives, World record, Category:World records.)

• Guinness World Records - Home of the Longest, Shortest, Fastest, Tallest facts and feats (See: Guinness World Records.)
• World Records Academy: fastest world record registration services, latest world records from around the world, Book of World Records, Record Breakers Club!
• The book of alternative records | weird, crazy, incredible and unusual world records!

Directories, miscellaneous (one of each type)[edit]

• useAssociations | International Directory of Professional Associations
• OnlineCamera.com - Worldwide Webcam Directory
• Social Media Websites | Social Media Directory
• World Government Data | guardian.co.uk (See: guardian.co.uk.)
• JobHuntersBible.com: [See: Richard Nelson Bolles, What Color Is Your Parachute? (book).]
• Main Page - Wikidweb ("the Wiki Directory of the Web")
• International Zip Codes, Reverse Search, Fax Search, Email Search, Outlet Stores, White Pages, Area Codes, Toll-Free Search, People Finder at FreeSearching.com
• Peelon.com - webinar directory. Find and Promote webinars.
• ASL Vlog & Video Directory (See: American Sign Language, Video blogging.)
• The largest Message Boards and Forums on the web!
• Listorious: Twitter people search and lists directory
• Pictures
• AllTheUsenet.Com- Newsgroups, Usenet Provider Directory, Usenet Portal, Usenet Resources Guide, NewsGroups Servers, Newsgroups NewsReader software (See: Usenet newsgroup, Category:Newsgroups.)
• Melissa DATA: Free Lookups
• Newsletters - Newsletter Directory Covering Every Topic and Specializing in Investment News. (See: Category:Newsletters.)
• How to Find Old Newspaper Articles and Magazines Online
• CataList, the official catalog of LISTSERV lists (See: LISTSERV.)
• Nupedia Links (compiled by Nupedia and archived by the Wayback Machine)
• Google Public Data Explorer (See: Google Public Data Explorer.)

Distraction online[edit]

(See also: Attention, Distraction, Human multitasking.)

• TELECOM Digest OnLine - Sorted: Aimless Workers 'Wilfing' Through Cyberspace
• BBC NEWS | Technology | Multitaskers bad at multitasking
• Unable to focus? Welcome to our distracted society's attention deficit
• Review - Distracted - Anxiety & Panic

Evaluating information and sources[edit]

(See also: List of fallacies, Category:Logical fallacies, List of hoaxes, Category:Hoaxes, List of common misconceptions, Category:Error, List of cognitive biases, Category:Cognitive biases, List of memory biases, Wikipedia:Identifying reliable sources.)

• Helpful Hints to Help You Evaluate the Credibility of Web Resources
• Evaluating Internet Research Sources
• The Infography ("An Expert Will Guide You to the Best Information")
• http://neglectedbooks.com/Straight_and_Crooked_Thinking.pdf (See: Robert H. Thouless, Straight and Crooked Thinking.)
• Verification Handbook: homepage

Google[edit]

(See also: List of Google products, Category:Google.)

• Google Scholar
• Simply Google
• Interactive online Google tutorial and references - Google Guide
• 101 Google tips, tricks and hacks | News | TechRadar UK (by: TechRadar)
• Search Features
• FGA: Google result counts are a meaningless metric. (See: Wikipedia:Search engine test.)

Internet facts[edit]

(See also: Internet, Category:Internet, World Wide Web, Category:World Wide Web.)

• The Internet
• About-the-web Internet Guide
• Internet 101 » The world’s most popular guide to the Internet
• LEARN THE NET: Your Online Guide
• 18 Fun Interesting Facts You Never Knew About The Internet | MakeUseOf
• Eight things you didn't know about the internet - New Scientist
• Is Google Making Us Stupid? - Magazine - The Atlantic (See: Is Google Making Us Stupid?.)

Internet statistics[edit]

(See also: Global Internet usage, Category:Internet by country, Domain Name System, Category:Domain Name System.)

• Internet World Stats - Usage and Population Statistics
• Domain Counts & Internet Statistics
• Network Overview /// Internet Traffic Report (See: Internet traffic.)
• Data Tools | Pew Research Center's Internet & American Life Project (by: Pew Research Center)
• Domain Counts provided by Domain Worldwide
• Norid: Domain name registries around the world (See: Top-level domain.)

Lists of web resources[edit]

(See also: Lists of websites, Category:Websites.)

• Full List - 50 Best Websites 2009 - TIME [by: Time (magazine)]
• Lose Your Wikipedia Crutch: 100 Places to Go for Good Answers Online | Distance Degrees.com
• cooltoolsforschools - Research Tools (hosted by: Wikispaces)
• Online College Blog and School Reviews | 100 Useful Tips and Tools to Research the Deep Web
• When Wikipedia Won't Cut It: 25 Online Sources for Reliable, Researched Facts - College Degree.com
• Research Beyond Google: 119 Authoritative, Invisible, and Comprehensive Resources | OEDb

Mirrors and forks of Wikipedia[edit]

(These links represent a brief selection of languages. Additional languages are listed in the left column on each of these pages.)

• English: Wikipedia:Mirrors and forks
• French: fr:Wikipédia:Sites utilisant Wikipédia
• German: de:Wikipedia:Weiternutzung
• Italian: it:Wikipedia:Cloni
• Portuguese: pt:Wikipédia:Clones da Wikipédia
• Spanish: es:Wikipedia:Espejos de Wikipedia

Miscellaneous links (one of each type)[edit]

(See also: Wikipedia:List of free online resources.)

• Librarianchick
• WikiPapers (a wiki about resources about wikis)
• Internet Accuracy Project
• Audio Books, Podcasts, Videos, and Free Downloads to Learn From
• Library Link of the Day
• Interval Signals Online (See: Interval signal.)

Morse code[edit]

(See also: Category:Morse code.)

• learn morse code (See: Morse code.)
• Just Learn Morse Code
• Morse Code Translator
• Morse Code: MIDI & Text Generator
• Morse Telegraph Club
• K6DBG streaming cw server ["CNN Breaking News in Morse (25/21/18/13 wpm)"] (Opening the web page, port 8080, downloads a file to a computer's media player, and play begins automatically.)

Praise and criticism[edit]

(See also: Corrective feedback, Category:Educational assessment and evaluation.)

• Productive praise and constructive criticism — Faculty Development
• Social and Cultural Foundations of American Education/Feedback/Feedback Skills - Wikibooks, open books for an open world(by: Wikibooks)
• Giving Feedback in Medical Education

Researching online[edit]

(See also: Internet research, Category:World Wide Web.)

• Finding Information on the Internet: Table of Contents (by: University of California, Berkeley Libraries)
• How to Find Anything Online: Become an Internet Research Expert | Webdesigner Depot

Researching with Wikipedia[edit]

(See also: Reliability of Wikipedia, Wikipedia:Researching with Wikipedia, Wikipedia:Citing Wikipedia, Category:Wikipedia.)

• How to Use Wikipedia For Research Papers
• News: A Stand Against Wikipedia - Inside Higher Ed
• Digital Literacy Resource - A Guide To Doing Research Online - Using Wikipedia (hosted by: Cornell University, Ithaca, NY)
• Teaching Central Newsletter :: FaCIT News for Faculty – Using Wikipedia to Teach Critical Thinking Skills (hosted by: Central Michigan University)
• Wikipedia as Participatory Journalism: Reliable Sources? Metrics for evaluating collaborative media as a news source (hosted by: University of Texas at Austin)
• The Wikipedia Review (see: Wikipedia Review.)
• Wikipediocracy (see: Wikipediocracy; indirect successor of Wikipedia Review, with a blog and a forum)
• Offwiki (for discussion about Wikipedia and her sister projects)
• 2008/9 Wikipedia Selection for schools (See: Wikipedia CD Selection.)
• Google Maps meets Wikipedia
• QRpedia - Language-detecting & mobile-friendly Wikipedia QR codes (See: QRpedia.)

Search engines (academic)[edit]

(See also: List of academic databases and search engines.)

• RefSeek - Academic Search Engine
• BASE (Bielefeld Academic Search Engine): Basic Search [See: BASE (search engine).]

Search engines for books[edit]

• The Online Books Page: Search (See: Online Books Page, by John Mark Ockerbloom, University of Pennsylvania Libraries, University of Pennsylvania, Philadelphia, PA.)
• 140,000 Free eBooks: SEARCH OPTIONS (165,000+ eBooks, eTexts, On-Line Books, eDocuments)
• Just Free Books - A search engine to find only free ebooks.

Search engines for PDF files[edit]

(See also: Portable Document Format.)

• PDF Search Engine.org - Search for PDF files
• PDF Search Engine - soPDF.com
• Millions of Free PDF eBooks! Free PDF Search Engine
• PDF Search Engine, View Download PDF Book, Search eBooks Document
• PDF Search Engine, free search, PDF download

Search engines for similar websites[edit]

• SimilarSiteSearch.com - The Best Place To Find Similar Websites
• moreofit - Website Similarity Search Engine

Search engines for Twitter feeds[edit]

(See also: Twitter, Category:Twitter.)

• Twitter Advanced Search
• Twinitor: twitter search and monitoring.
• monitter : real time, live twitter search and monitoring
• Snap Bird - search twitter's history
• Twazzup: Realtime News
• TweetFeel Twitter Sentiment - Twitter Search with Feelings about anything popular.

Search engines for Twitter users[edit]

• Top Twitter User Rankings & Stats | Twitaholic.com
• Twitter Stats by Twitter Counter
• Twitter Directory and Search, Find Twitter Followers : WeFollow
• First Issue Blog » Blog Archive » A Directory of Book Trade People on Twitter
• Localtweeps :: Help localize your Twittersphere! :: Home
• My Twitter Directory :: Twitter Search, Yellow Pages : Find Followers
• TweetFind Twitter Account Directory - TweetFind

Search engines, miscellaneous (one of each type)[edit]

(See also: List of search engines, Category:Internet search engines.)

• BookFinder.com: Search for New & Used Books, Textbooks, Out-of-Print and Rare Books (See: BookFinder.com.)
• FindHow - The How-To Search Engine
• TinEye Reverse Image Search (See: TinEye.)
• Princeton 3D Model Search Engine
• Global FTP Search Engine: Global File Search Engine (See: File Transfer Protocol.)
• XPASE - e(X)perimental (P)assive (A)ggressive (S)earch (E)ngine (diversified)
• Social Searcher - Social Media Search Engine (search posts, users and trends in popular social networks)
• VIAF (See: Virtual International Authority File.)
• InfoRapid Knowledge Portal
• Infotopia--A Google Alternative Safe Search Engine for Students

Tweet analytics[edit]

• a world of tweets
• http://www.tweetolife.com/gender/

Web analytics[edit]

(See also: Web analytics, List of web analytics software, Category:Web analytics.)

• Alexa the Web Information Company (See: Alexa Internet.)
• Google Analytics | Official Website (See: Google Analytics.)

Web archives[edit]

(See also: List of Web archiving initiatives, Category:Web archiving initiatives.)

• Internet Archive: Digital Library of Free Books, Movies, Music & Wayback Machine (See: Internet Archive, Wayback Machine.)
• WebCite (See: WebCite.)

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