39 Alternatives to Wikipedia

The American Presidency Project is a project out of the University of California Santa Barbara. If you want to know something about American presidents, it's here: over 87,000 documents all freely available to the public.

Wolfram Alpha search engine also has a pretty impressive library archive where you can find thousands of downloadable resources from Wolfram research.

The Farmer's Almanac has been around in different forms since 1792, and today's online version is even more useful. You can use the Almanac to look up tide tables, planting charts, recipes, forecasts, moon rises, and everyday advice.

The Martindale Reference Desk is divided into multiple sections: Language, Science, Business, Mathematics, etc. Simply choose the subject area you're interested in and browse the references available.

Bibliomania offers more than 2000 classic texts online for you to peruse, as well as study guides and a searchable index.

The Encyclopedia Smithsonian is the definitive collection of everything the Smithsonian Museum has to offer. Search over 2 million records with images, video and sound files, electronic journals and other resources from the Smithsonian's museums, archives, and libraries.

Open Library is an Internet Archive project aimed at compiling one web page for every book ever published. To date, they have amassed over 20 million records, all of which are freely accessible.

Stumped on a legal term? You can find the definition in plain English at the NOLO Legal Dictionary, a free resource that provides easy to understand information on hundreds of commonly used legal words and phrases.

Put together by the University of Michigan Library, the Government Documents Center is an exhaustive database of U.S. government statistics and factual documents.

3000 years of world history presented interactively via timelines, graphics, and maps. Click on the time period you're interested in, and then use the menus on the left and the right to manipulate your data.

Search through comprehensive medical database at the Merck Medical Library, an exhaustive index of medical information culled from the Merck series of health resources for both medical professionals and laymen.

Library Spot is a reference utopia. You can browse a list of libraries online, newspapers, poetry, archives, maps, current events, dictionaries...you name it, you can probably find it at Library Spot.

From the US National Library of Medicine and the National Institutes of Health; searchable indexes of searches pre-forumulated with information, drug resources, medical encyclopedias, interactive tutorials, and current medical news.

The Library of Congress, one of the largest American cultural repositories, has placed their incredible collection of records online via the Library of Congress Online Catalog. According to the Library records, there are over 14 million documents here, including books, serials, computer files, manuscripts, cartographic materials, music, sound recordings, and visual materials.

Over 7000 articles related to anything mythology: Greek, Roman, Norse, Celtic, Native American, and more. The mythology sections are divided into geographical regions, so you can search via country, plus, there are special gallery sections: heroes, genealogical information, and more.

OneLook is a meta search dictionary engine, indexing over 1000 different dictionaries at the time of this writing. You can use OneLook not only for simple definitions, but also for related words, related concepts, phrases that contain a certain word, translations, and more.

If you want to research an auto, Edmunds is the place to do it. You can find information here on both new and used cars, car reviews, industry news, auto shows, local car dealerships, glossary of terms, and savvy auto advice.

If you need to know about a computer or technology related term, you can find it at Webopedia.

Anything you want to know about nearly any country or region in the world, you'll be able to find it at the CIA World Factbook. This amazing resource offers you information on the history, people, government, economy, geography, communications, transportation, military, and transnational issues for 266 different countries, along with maps, flags, and country comparisons.

Need to know about a legal issue? You can use FindLaw to do some initial research on anything legal-related, as well as find a lawyer in your local area and interact with the FindLaw legal community.

FactCheck, a project of the Annenberg Public Policy Center, monitors accuracy in the US political process by diligently fact-checking everything that prominent political figures say and do.

Anything you want to know about sports - stats, box scores, game logs, playoffs — you can find it at Sports Reference. This site offers detailed information for fans of baseball, basketball, football, hockey, and the Olympic Games.

If you need help with writing, you'll find it here. Style guides, grammar, mechanics, ESL resources, and much more.

Need to know something about chemicals, compounds, substances, or bioassays? You can find it at PubChem, a comprehensive database put together by the National Center for Biotechnology Information.

PDR Health is a production of the Physician's Desk Reference. You can use PDR Health to look up information about prescriptions, herbal medicines, and user-friendly health and wellness information.

Whether you need to convert simple measurements or complicated astronomy figures, you'll be able to do it at OnlineConversion.com, an extensive site featuring hundreds of conversion tools.

If you need to translate something, you'll be able to do it with Lexicool. Over 7000 dictionaries and glossaries here in a wide variety of languages.

Find maps and directions at Google Maps; you can also check out locations in Street, Traffic, and Satellite views. Google Maps also periodically offers special features, such as maps for the Winter Olympics.

The Genetic Home Reference, a project of the National Library of Medicine, is a stellar resource for genetic information and information about genetic conditions.

Get demographic information about nearly any community in the United States at ePodunk, a fascination data collection for over 46,000 different cities, towns, and suburbs in the US.

Doing research on a company's human rights impact is difficult — unless you visit the Business and Human Rights Resource Center. This resource covers over 4000 companies in over 180 countries, and deals with topics such as discrimination, environment, poverty and development, labor, medical health, security, and trade.

BookFinder is a search engine for new, used, rare, out-of-print, and textbooks. Over 150 million books are available here; if you want to find something somewhat obscure, this is the place.

View full country profiles from all over the world; in addition to basic stats, the BBC also provides audio and video clips from their archives.

Need help on how to pronounce a word — in virtually any language? Try Forvo, the largest pronunciation guide currently online, with hundreds of thousands of words and pronunciations in over 200 different languages.

WorldMapper is a collection of hundreds of world maps, each focusing on a particular topic. For example, you can find maps on land area, disease, religion, income, and more.

WorldCat allows you to search the largest network of library content and services online, tapping into literally hundreds of different libraries from all over the world.

At Our Documents, you can explore 100 cornerstone documents of American history, i.e., the Declaration of Independence, the Constitution, the Bill of Rights, and many more.

The Voice of the Shuttle started in 1994 and is one of the largest humanities resources on the Web today. Anything from anthropology to religious studies is covered here.