Best Citizendium Alternatives in 2026
Updated
20 tools from online encyclopedias ranked against Citizendium on the same published basis.
- 1Citizendium vs Encyclopaedia Universalis
- 2Citizendium vs Treccani
- 3Citizendium vs Wikipedia
- 4Citizendium vs Enciclopèdia.cat
- 5Citizendium vs Encyclopedia of Arkansas
- 6Citizendium vs Encyclopedia Virginia
- 7Citizendium vs Lex – Danmarks Nationalleksikon
- 8Citizendium vs Store norske leksikon
- 9Citizendium vs Baidu Baike
- 10Citizendium vs Brockhaus
- 11Citizendium vs Encyclopaedia Britannica
- 12Citizendium vs Encyclopedia.com
- 13Citizendium vs Encyclopédie Larousse
- 14Citizendium vs Nationalencyklopedin
- 15Citizendium vs Vikidia
- 16Citizendium vs Encyclopedia of Alabama
- 17Citizendium vs Encyclopedia of Korean Culture
- 18Citizendium vs Klexikon
- 19Citizendium vs New World Encyclopedia
- 20Citizendium vs Oxford Reference
Citizendium alternatives compared
| # | Tool | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Encyclopaedia Universalis | 7.2 | No | €1/mo | Android, iOS, Web |
| 2 | Treccani | 7.1 | Android, iOS, Web | ||
| 3 | Wikipedia | 7.1 | Free plan | Free | Android, API, iOS, Web |
| 4 | Enciclopèdia.cat | 6.9 | Free plan | Free | Web |
| 5 | Encyclopedia of Arkansas | 6.9 | Free plan | Free | Web |
| 6 | Encyclopedia Virginia | 6.9 | Free plan | Free | Web |
| 7 | Lex – Danmarks Nationalleksikon | 6.9 | Free plan | Free | Web |
| 8 | Store norske leksikon | 6.9 | Free plan | Free | API, iOS, Web |
| 9 | Baidu Baike | 6.8 | Free plan | Free | Web |
| 10 | Brockhaus | 6.8 | No | €5.83/mo | Web |
| 11 | Encyclopaedia Britannica | 6.8 | Free plan | Free | Web |
| 12 | Encyclopedia.com | 6.8 | Free plan | Free | Web |
| 13 | Encyclopédie Larousse | 6.8 | Free plan | Free | Web |
| 14 | Nationalencyklopedin | 6.8 | No | SEK 49.17/mo | Web |
| 15 | Vikidia | 6.8 | Free plan | Free | Web |
| 16 | Encyclopedia of Alabama | 6.7 | Free plan | Free | Web |
| 17 | Encyclopedia of Korean Culture | 6.7 | Free plan | Free | API, Web |
| 18 | Klexikon | 6.7 | Free plan | Free | Web |
| 19 | New World Encyclopedia | 6.7 | Free plan | Free | Web |
| 20 | Oxford Reference | 6.7 | Web |
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Questions about Citizendium alternatives
What is the best alternative to Citizendium?
Encyclopaedia Universalis, number 1 in online encyclopedias with a score of 7.2 out of 10. The others here: Treccani, Wikipedia, Enciclopèdia.cat and 16 more.
What is the best free alternative to Citizendium?
Wikipedia is the best-ranked alternative with a free plan. 15 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked on what each maker publishes, the fullest spec sheet first: how deeply the product is documented, the platforms it runs on, a free tier or trial to test it, and its standing.