Best Knowledge Base Software in 2026
Updated
In short: Nuclino is ranked #1 of 138 as of 4 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.
A well-kept knowledge base helps people find and maintain answers, whether the material is intended for a team or a wider audience. Nuclino, ProProfs Knowledge Base, and Confluence are among the leading entries. Compared on article limit, publishing audience, content analytics, and version history, the options show different ways to organize and maintain information. Custom domain and SSO support are also useful distinctions to weigh. Check free-plan availability and the listed starting price alongside those capabilities, and consider which controls and publishing choices suit the people who will use the content.
138 knowledge base software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
138ranked
18free plans on this page
$0.99/molowest paid tier
4 Oct 2026last checked
Input list Knowledge base software 25 channels on this page · 126 of 200 spec lines stated by the makers
Ch Tool Free planPaid fromPublishing audienceArticle limitCustom domainSSO supportVersion historyContent analytics Spec sheet Score
01 Nuclino Free planYesPaid fromnot statedPublishing audiencebothArticle limit50 articlesCustom domainYesSSO supportYesVersion historyYesContent analyticsnot stated 6/8spec lines stated 9.4
02 ProProfs Knowledge Base Free planYesPaid fromFreePublishing audiencebothArticle limit25 articlesCustom domainYesSSO supportYesVersion historyYesContent analyticsYes 8/8spec lines stated 9.4
03 Confluence Free planYesPaid fromFreePublishing audiencebothArticle limitnot statedCustom domainYesSSO supportYesVersion historyYesContent analyticsYes 7/8spec lines stated 9.2
04 GitBook Free planYesPaid from$65/moPublishing audiencebothArticle limitnot statedCustom domainYesSSO supportYesVersion historyYesContent analyticsYes 7/8spec lines stated 8.7
05 BlueSpice Free planYesPaid fromFreePublishing audiencebothArticle limitnot statedCustom domainYesSSO supportYesVersion historyYesContent analyticsYes 7/8spec lines stated 8.6
06 Slite Free planNoPaid fromnot statedPublishing audiencebothArticle limitnot statedCustom domainYesSSO supportYesVersion historyYesContent analyticsYes 6/8spec lines stated 8.6
07 Papyrs Free planYesPaid from$89/moPublishing audiencenot statedArticle limitnot statedCustom domainnot statedSSO supportYesVersion historyYesContent analyticsnot stated 4/8spec lines stated 8.6
08 Docmost Free planYesPaid fromnot statedPublishing audiencebothArticle limitnot statedCustom domainnot statedSSO supportYesVersion historyYesContent analyticsnot stated 4/8spec lines stated 8.5
09 Wiki.js Free planYesPaid fromnot statedPublishing audiencebothArticle limitnot statedCustom domainYesSSO supportYesVersion historyYesContent analyticsnot stated 5/8spec lines stated 8.5
10 Zoho Learn Free planYesPaid fromnot statedPublishing audiencebothArticle limitnot statedCustom domainYesSSO supportnot statedVersion historyYesContent analyticsYes 5/8spec lines stated 8.3
11 Slab Free planYesPaid fromnot statedPublishing audiencebothArticle limitnot statedCustom domainYesSSO supportYesVersion historyYesContent analyticsYes 6/8spec lines stated 8.3
12 Mintlify Free planYesPaid from$450/moPublishing audiencebothArticle limitnot statedCustom domainYesSSO supportYesVersion historynot statedContent analyticsYes 6/8spec lines stated 8.3
13 Elium Free planNoPaid fromnot statedPublishing audiencenot statedArticle limitnot statedCustom domainnot statedSSO supportYesVersion historyYesContent analyticsnot stated 3/8spec lines stated 8.2
14 Outline Free planNoPaid from$10/moPublishing audiencebothArticle limitnot statedCustom domainYesSSO supportYesVersion historyYesContent analyticsYes 7/8spec lines stated 8.2
15 Hudu Free planNoPaid fromnot statedPublishing audiencenot statedArticle limitnot statedCustom domainnot statedSSO supportYesVersion historynot statedContent analyticsnot stated 2/8spec lines stated 8.2
16 Helpable Free planYesPaid from$25/moPublishing audiencebothArticle limit15 articlesCustom domainYesSSO supportYesVersion historyYesContent analyticsYes 8/8spec lines stated 8.2
17 BookStack Free planYesPaid fromnot statedPublishing audiencebothArticle limitnot statedCustom domainYesSSO supportYesVersion historyYesContent analyticsnot stated 5/8spec lines stated 8.1
18 Docsie Free planYesPaid from$170/moPublishing audiencenot statedArticle limitnot statedCustom domainYesSSO supportnot statedVersion historynot statedContent analyticsnot stated 3/8spec lines stated 8.1
19 Paligo Free planNoPaid fromnot statedPublishing audiencenot statedArticle limitnot statedCustom domainYesSSO supportnot statedVersion historynot statedContent analyticsnot stated 2/8spec lines stated 8.1
20 Intercom Free planNoPaid fromFreePublishing audienceCustomers using a website, app, or product experienceArticle limitnot statedCustom domainnot statedSSO supportYesVersion historynot statedContent analyticsnot stated 4/8spec lines stated 8.0
21 MediaWiki Free planYesPaid fromnot statedPublishing audiencebothArticle limitnot statedCustom domainYesSSO supportYesVersion historyYesContent analyticsYes 6/8spec lines stated 7.9
22 Notejoy Free planYesPaid from$5/moPublishing audiencenot statedArticle limitnot statedCustom domainnot statedSSO supportnot statedVersion historynot statedContent analyticsnot stated 2/8spec lines stated 7.9
23 IT Glue Free planNoPaid fromnot statedPublishing audiencenot statedArticle limitnot statedCustom domainnot statedSSO supportYesVersion historynot statedContent analyticsnot stated 2/8spec lines stated 7.8
24 SwaggerHub Free plannot statedPaid fromnot statedPublishing audiencebothArticle limitnot statedCustom domainYesSSO supportYesVersion historyYesContent analyticsnot stated 4/8spec lines stated 7.8
25 WikiFlow Free planYesPaid from$49/moPublishing audienceinternalArticle limitnot statedCustom domainYesSSO supportYesVersion historyYesContent analyticsYes 7/8spec lines stated 7.8
Compare all 25 in a table
| # | Tool | Score | Free plan | From | Free plan | Paid from | Publishing audience | Article limit |
|---|---|---|---|---|---|---|---|---|
| 1 | Nuclino | 9.4 | Free plan | Free | Yes | — | both | 50 articles |
| 2 | ProProfs Knowledge Base | 9.4 | Free plan | $0.99/mo | Yes | Free | both | 25 articles |
| 3 | Confluence | 9.2 | Free plan | $5.42/mo | Yes | Free | both | — |
| 4 | GitBook | 8.7 | Free plan | $65/mo | Yes | $65/mo | both | — |
| 5 | BlueSpice | 8.6 | Free plan | €4.50/mo | Yes | Free | both | — |
| 6 | Slite | 8.6 | No | $10/mo | No | — | both | — |
| 7 | Papyrs | 8.6 | Free plan | — | Yes | $89/mo | — | — |
| 8 | Docmost | 8.5 | Free plan | — | Yes | — | both | — |
| 9 | Wiki.js | 8.5 | Free plan | Free | Yes | — | both | — |
| 10 | Zoho Learn | 8.3 | Free plan | Free | Yes | — | both | — |
| 11 | Slab | 8.3 | Free plan | $6.67/mo | Yes | — | both | — |
| 12 | Mintlify | 8.3 | Free plan | $450/mo | Yes | $450/mo | both | — |
| 13 | Elium | 8.2 | No | €15/mo | No | — | — | — |
| 14 | Outline | 8.2 | No | $10/mo | No | $10/mo | both | — |
| 15 | Hudu | 8.2 | No | $27/mo | No | — | — | — |
| 16 | Helpable | 8.2 | Free plan | $25/mo | Yes | $25/mo | both | 15 articles |
| 17 | BookStack | 8.1 | Free plan | £37.50/mo | Yes | — | both | — |
| 18 | Docsie | 8.1 | Free plan | $170/mo | Yes | $170/mo | — | — |
| 19 | Paligo | 8.1 | No | $416.67/mo | No | — | — | — |
| 20 | Intercom | 8.0 | No | $19/mo | No | Free | Customers using a website, app, or product experience | — |
| 21 | MediaWiki | 7.9 | Free plan | Free | Yes | — | both | — |
| 22 | Notejoy | 7.9 | Free plan | $5/mo | Yes | $5/mo | — | — |
| 23 | IT Glue | 7.8 | No | $29/mo | No | — | — | — |
| 24 | SwaggerHub | 7.8 | Free plan | $61.67/mo | — | — | both | — |
| 25 | WikiFlow | 7.8 | Free plan | $49/mo | Yes | $49/mo | internal | — |
Is your tool 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 Specifiction?
Nuclino is ranked #1 of 138 with a score of 9.4. ProProfs Knowledge Base is second and Confluence third.
How many of these have a free plan?
18 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 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.
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