Citizendium

Web

Visit site Alternatives

Freedom report

One barScore 5.3

Runs widely1 of 6 device platforms
DocumentedPlans, terms and facts published

Citizendium is ranked #23 of 31 in online encyclopedias on Freedom251. It runs on Web.

Compared on online encyclopedias

Free plan: Yes
Citation tools: Yes
Content formats: text
Update frequency: not stated

Best Citizendium alternatives

See all 20

Two bars Wikipedia Free tier No. 1Free6.5 One bar Baidu Baike Free tier No. 2Free6.4 One bar Enciclopèdia.cat Free tier No. 3Free6.4 One bar Encyclopaedia Britannica Free tier No. 4Free6.4 One bar Encyclopedia of Alabama Free tier No. 5Free6.4 One bar Encyclopedia of Arkansas Free tier No. 6Free6.4

The record

What it is: Citizendium describes itself as a wiki for providing free knowledge.
Contributors: The welcome page says authors use their real names and invites anyone to share knowledge on virtually any subject.
Community: The welcome page describes its online community as congenial and supportive.
Subject areas: The welcome page lists workgroups across subjects including agriculture, anthropology, biology, business, chemistry, economics, education, history, law, physics, and psychology.
Article statuses: The welcome page groups articles into Citable, Developed, Developing, and Stubs.
Editing help: A Citizendium getting-started page points contributors to a sandbox where they can test editing.
Support: The getting-started page says contributors can seek help in the forum or by leaving a note on a user's or editor's talk page.
Policy discussions: The getting-started page says the forum is also used to discuss policy and proposals.
Current workgroups: A Citizendium workgroup category page says workgroups are no longer used for group communications, but still group articles into fields of interest.
Article metadata: The workgroup category page says each article is assigned to one to three workgroups via its metadata.
Notable limit: The welcome page reports 16,436 articles in total, including 146 Citable, 1,125 Developed, 7,368 Developing, and 7,666 Stubs.
Software access: The opened Citizendium pages present the encyclopedia as a web wiki; they do not state downloadable desktop or mobile apps, platform support beyond the web, or an API.

Where it ranks on Freedom251

Best Online Encyclopedias in 2026#23 of 31

Is Citizendium yours?

Claim it for free: prove the domain, then correct facts, plans and screenshots. An editor reviews every change.

Claim it free Promote Citizendium

Sources

citizendium.org/wiki/index.php· checked 9 Oct 2026
citizendium.org/wiki/User_talk%3AKelly_D_Johnston· checked 9 Oct 2026
en.citizendium.org/wiki/index.php· checked 9 Oct 2026