Best Knowledge Base Software in 2026
Updated
In short: Nuclino is ranked #1 of 138 as of 7 October 2026, ahead of ProProfs Knowledge Base and Confluence. The best-ranked option with a free plan is ProProfs Knowledge Base. The lowest first paid tier on this page is ProProfs Knowledge Base at $0.99/mo.
Knowledge base software helps teams publish and maintain information for people who need it. Compared on article limits, publishing audience, and content analytics, the entries also vary in version history and SSO support. Custom domain availability may matter for published material, while free plans and paid-from pricing give you cost details to compare. Nuclino, ProProfs Knowledge Base, and Confluence are among the options. Think about who needs to access your content, how your team will keep it up to date, and which listed controls or insights are important for making that information useful.
138 knowledge base software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
25 of the 25 here have a free tier you can use, 0 have open-source code on record, and 0 have full bars: free, open, on most of your devices and documented.
| # | App | Signal | Free tier | Open code | Devices | From | Score |
|---|---|---|---|---|---|---|---|
| 1 | NuclinoWeb · Windows · Mac · Linux · Android · iPhone · API | Three bars | — | 6 of 6 | Free | 8.2 | |
| 2 | ProProfs Knowledge BaseWeb · Windows · Android · iPhone · API · Extension | Three bars | — | 4 of 6 | $0.99/mo | 8.2 | |
| 3 | ConfluenceWeb · Android · iPhone · Self-hosted | Three bars | — | 3 of 6 | $5.42/mo | 8.1 | |
| 4 | BlueSpiceSelf-hosted | Two bars | — | 0 of 6 | €4.50/mo | 7.9 | |
| 5 | Zoho LearnWeb · Android · iPhone | Three bars | — | 3 of 6 | Free | 7.9 | |
| 6 | GitBookWeb · API | Two bars | — | 1 of 6 | $65/mo | 7.9 | |
| 7 | Wiki.jsWeb · Windows · Mac · Linux · Self-hosted · API | Three bars | — | 4 of 6 | Free | 7.9 | |
| 8 | DocmostWeb · Self-hosted · API | Two bars | — | 1 of 6 | Free | 7.8 | |
| 9 | SlabWeb · Windows · Mac | Three bars | — | 3 of 6 | $6.67/mo | 7.8 | |
| 10 | Stack InternalWeb | One bar | — | 1 of 6 | Free | 7.6 | |
| 11 | BookStackWeb · Linux · Self-hosted · API | Two bars | — | 2 of 6 | £37.50/mo | 7.6 | |
| 12 | FernWeb · Windows · Mac · Linux · Self-hosted · API | Three bars | — | 4 of 6 | Free | 7.6 | |
| 13 | telaWeb | Two bars | — | 1 of 6 | Free | 7.4 | |
| 14 | DocsieWeb · Self-hosted · API | Two bars | — | 1 of 6 | $170/mo | 7.4 | |
| 15 | ReadMeWeb | Two bars | — | 1 of 6 | $250/mo | 7.4 | |
| 16 | PaligoWeb · API | Two bars | — | 1 of 6 | $416.67/mo | 7.4 | |
| 17 | MediaWikiWeb · Windows · Mac · Linux · Self-hosted · API | Three bars | — | 4 of 6 | Free | 7.4 | |
| 18 | HelpableWeb · API | Two bars | — | 1 of 6 | $25/mo | 7.3 | |
| 19 | MintlifyWeb · Windows · Mac · Linux | Three bars | — | 4 of 6 | $450/mo | 7.3 | |
| 20 | NotejoyWeb · Windows · Mac · Android · iPhone | Three bars | — | 5 of 6 | $5/mo | 7.3 | |
| 21 | PapyrsWeb · Windows · Mac · Linux · Android · iPhone · API | Three bars | — | 6 of 6 | Free | 7.3 | |
| 22 | SwaggerHubWeb · Self-hosted | Two bars | — | 1 of 6 | $61.67/mo | 7.1 | |
| 23 | WikiFlowWeb | Two bars | — | 1 of 6 | $49/mo | 7.1 | |
| 24 | PmWikiWeb · Windows · Mac · Linux · Self-hosted | Three bars | — | 4 of 6 | Free | 7.1 | |
| 25 | Help ScoutAPI | Two bars | — | 0 of 6 | $25/mo | 7.0 |
Compare all 25 in a table
| # | App | Score | Free plan | From | Free plan | Paid from | Publishing audience | Article limit |
|---|---|---|---|---|---|---|---|---|
| 1 | Nuclino | 8.2 | Free plan | Free | Yes | — | both | 50 articles |
| 2 | ProProfs Knowledge Base | 8.2 | Free plan | $0.99/mo | Yes | Free | both | 25 articles |
| 3 | Confluence | 8.1 | Free plan | $5.42/mo | Yes | Free | both | — |
| 4 | BlueSpice | 7.9 | Free plan | €4.50/mo | Yes | Free | both | — |
| 5 | Zoho Learn | 7.9 | Free plan | Free | Yes | — | both | — |
| 6 | GitBook | 7.9 | Free plan | $65/mo | Yes | $65/mo | both | — |
| 7 | Wiki.js | 7.9 | Free plan | Free | Yes | — | both | — |
| 8 | Docmost | 7.8 | Free plan | — | Yes | — | both | — |
| 9 | Slab | 7.8 | Free plan | $6.67/mo | Yes | — | both | — |
| 10 | Stack Internal | 7.6 | Free plan | Free | Yes | — | — | — |
| 11 | BookStack | 7.6 | Free plan | £37.50/mo | Yes | — | both | — |
| 12 | Fern | 7.6 | Free plan | Free | Yes | — | both | — |
| 13 | tela | 7.4 | Free plan | Free | Yes | $6/mo | both | — |
| 14 | Docsie | 7.4 | Free plan | $170/mo | Yes | $170/mo | — | — |
| 15 | ReadMe | 7.4 | Free plan | $250/mo | Yes | $250/mo | both | — |
| 16 | Paligo | 7.4 | No | $416.67/mo | No | — | — | — |
| 17 | MediaWiki | 7.4 | Free plan | Free | Yes | — | both | — |
| 18 | Helpable | 7.3 | Free plan | $25/mo | Yes | $25/mo | both | 15 articles |
| 19 | Mintlify | 7.3 | Free plan | $450/mo | Yes | $450/mo | both | — |
| 20 | Notejoy | 7.3 | Free plan | $5/mo | Yes | $5/mo | — | — |
| 21 | Papyrs | 7.3 | Free plan | — | Yes | $89/mo | — | — |
| 22 | SwaggerHub | 7.1 | Free plan | $61.67/mo | — | — | both | — |
| 23 | WikiFlow | 7.1 | Free plan | $49/mo | Yes | $49/mo | internal | — |
| 24 | PmWiki | 7.1 | Free plan | Free | Yes | — | — | — |
| 25 | Help Scout | 7.0 | Free plan | $25/mo | Yes | $25/mo | Customers | 10 articles |
Is your app on this list?
Numbered spots on this list can be sponsored, and a sponsored row is labelled as paid.
Questions about this list
Which knowledge base software is ranked first on Freedom251?
Nuclino is ranked #1 of 138 with a score of 8.2. ProProfs Knowledge Base is second and Confluence third.
How many of these have a free plan?
24 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, ProProfs Knowledge Base has the lowest first paid tier we found: $0.99/mo.
How is this list ranked?
Ranked free-and-open first: a usable free tier and open-source code, then the platforms it runs on and its documentation.