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Encyclopedia.com
What Encyclopedia.com is
Encyclopedia.com is a free web reference service for searching and browsing published reference material. It offers over 300,000 entries from sources including Oxford University Press and the Columbia Encyclopedia, alongside more than 50,000 topic summaries with related pictures, videos, and newspaper and magazine articles. The site says it continually updates partner content and provides search across more than 200 encyclopedias and reference books. Visitors can enter keywords or browse entries alphabetically. Search results are ordered by relevance according to how often a search term appears in an article. The FAQ gives citation details for The Columbia Encyclopedia, Sixth Edition, including its 2008 publication information. The site says top universities and institutions use it daily for research. Its terms allow searching, viewing, downloading and printing for personal use, but prohibit systematic downloading or scraping without permission. The privacy policy describes collection of account, device, IP, browsing, cookie and session information, and an advertising relationship with CMI Marketing, doing business as CafeMedia. The privacy policy also refers to a mobile application named “Encyclopedia.”
Who it suits
Encyclopedia.com suits readers looking for reference entries and topic summaries, or browsing across a large collection of reference books. Its terms limit permitted use to personal searching, viewing, downloading and printing.
What it does well
- More than 300,000 reference entries.
- Over 50,000 topic summaries include multimedia and articles.
- Search spans more than 200 reference works.
- Entries can be searched by keyword or browsed alphabetically.
What to know first
- Systematic downloading or scraping is prohibited without permission.
- Terms limit use to personal purposes.
- Privacy policy describes collection of device and browsing information.
- Advertising is handled through a stated CMI Marketing affiliation.
Limits
The free plan includes over 300,000 reference entries and more than 50,000 topic summaries. The terms limit use to personal searching, displaying, downloading, and printing, and prohibit systematic downloading or scraping without permission.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Free | over 300,000 reference entries · over 50,000 topic summaries · personal use only | Free |
As encyclopedia.com lists them, read 15 Oct 2026. The maker's own page has the final word.
Getting started
- Visit https://www.encyclopedia.com/ in a web browser.
- Search for a topic using keywords or browse entries alphabetically.
- Use the free plan to explore reference entries and topic summaries.
Verdict
Encyclopedia.com provides a large free reference collection with keyword search and alphabetical browsing. Readers should note its personal-use restrictions and the data collection described in its privacy policy.
Questions
Is Encyclopedia.com free?
Yes. Its free plan costs nothing.
What content does it include?
It offers over 300,000 reference entries and more than 50,000 topic summaries. The site says users can search over 200 encyclopedias and reference books.
What platforms are available?
The listed platform is web. The privacy policy also refers to a mobile application named “Encyclopedia.”
Can I cite Encyclopedia.com content?
The FAQ provides citation details for The Columbia Encyclopedia, Sixth Edition, including its 2008 publication information.
Can I download or print entries?
The terms permit personal searching, displaying, downloading, and printing. Systematic downloading or scraping requires permission.
What information does the privacy policy describe collecting?
It describes collection of account information, device and IP data, browsing activity, cookies, web beacons, and session logs.
Facts from Encyclopedia.com's own pages
- Acquisition news
- Library Technology reports that Gale acquired HighBeam Research, the producer of Encyclopedia.com, on December 16, 2008, with operations remaining in Chicago and financial terms undisclosed. · librarytechnology.org, 15 Oct 2026
- Advertising
- The privacy policy says the site is affiliated with CMI Marketing, doing business as CafeMedia, for advertising placement and data use. · encyclopedia.com, 1 Oct 2026
- Apple app complaint
- Apple reviewers complained about frequent advertisements, long ad blocks, weak search, and alleged data-mining concerns. · apps.apple.com, 15 Oct 2026
- App-store listing distinction
- The Apple App Store listing named “Encyclopedia: 25,000+ topic” identifies Anas Almomany, rather than Encyclopedia.com, as developer. · apps.apple.com, 15 Oct 2026
- Audience claim
- The homepage says top universities and institutions use Encyclopedia.com for research. · encyclopedia.com, 15 Oct 2026
- Automation restriction
- The terms prohibit crawlers, bots, scraping, and systematic extraction from HTML or the XML interface without written permission. · encyclopedia.com, 15 Oct 2026
- Citation support
- The FAQ provides citation details for The Columbia Encyclopedia, Sixth Edition, including its 2008 publication information. · encyclopedia.com, 1 Oct 2026
- Content maintenance
- Encyclopedia.com says partner content is continually updated. · encyclopedia.com, 15 Oct 2026
- Content partners
- The site identifies Oxford University Press and Columbia Encyclopedia among its published-source partners. · encyclopedia.com, 15 Oct 2026
- Content updates
- Encyclopedia.com says it continually updates content from its partners. · encyclopedia.com, 1 Oct 2026
- Developer access
- The terms mention an XML interface but require written permission for automated access; no public SDK or developer program is described there. · encyclopedia.com, 15 Oct 2026
- Free content
- The about page advertises free access to more than 300,000 reference entries. · encyclopedia.com, 15 Oct 2026
- Google app complaints
- Google Play reviewers criticized missing detail, poor interface design, limited visuals, and allegedly biased or false information. · play.google.com, 15 Oct 2026
- Google app features
- The Farlex app listing describes definitions, images, audio pronunciations, bookmarks, voice search, advanced search, and sharing. · play.google.com, 15 Oct 2026
- Google Play listing distinction
- Google Play lists “Encyclopedia by Farlex” from TheFreeDictionary.com–Farlex, a separate developer from Encyclopedia.com. · play.google.com, 15 Oct 2026
- Historical launch
- Wikipedia records Encyclopedia.com as launched by Infonautics in March 1998. · en.wikipedia.org, 15 Oct 2026
- Independent company listing
- Siteencyclopedia lists HighBeam Research, Inc. as owner, with a Chicago, Illinois address and a 1998 start date. · siteencyclopedia.com, 15 Oct 2026
- Licence
- The terms describe service content and tools as copyrighted or otherwise proprietary and owned, controlled, or licensed by Encyclopedia.com or licensors. · encyclopedia.com, 15 Oct 2026
- Limit: advertising and navigation
- A reviewer said advertisements make text jump and shift during reading, making the site effectively unusable. · smartcustomer.com, 15 Oct 2026
- Limit: content accuracy
- Reviewers alleged that some historical entries contain biased or misleading interpretations, unsupported claims, and opinions presented as facts. · smartcustomer.com, 15 Oct 2026
- Maker profile
- LinkedIn lists Gale, part of Cengage Group, as headquartered in Farmington Hills, Michigan, founded in 1954, with 501–1,000 employees. · linkedin.com, 15 Oct 2026
- Mobile application
- The privacy policy refers to a mobile application named “Encyclopedia” alongside the website. · encyclopedia.com, 1 Oct 2026
- Ownership history
- Wikipedia says Patrick Spain bought Encyclopedia.com in 2002, later operated it through HighBeam Research, and HighBeam was eventually sold to Gale. · en.wikipedia.org, 15 Oct 2026
- Praise: educational value
- A reviewer described the site as an educational hub with broad information and a preferred source for learning. · smartcustomer.com, 15 Oct 2026
Where Encyclopedia.com stands on Freedom251
- Online Encyclopedias#7 of 31