Best Internal Knowledge Base Software in 2026
23 internal knowledge base software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
23ranked
11free plans on this page
$0.83/molowest paid tier
2 Oct 2026last checked
#1 Confluence Top pick · 9.4 Free plan · $5.42/mo
#2 BlueSpice Runner-up · 9.0 Free plan · €4.50/mo
#3 Nuclino Also great · 9.0 Free plan · Free
- Free planFree trial AndroidiOSself-hostedWebRecognisedDocumentedFree planFree trialPlatforms$5.42/mofirst paid tier About ConfluenceVisit site
- Free planFree trial self-hosted
- Free plan
- Yes
- Single sign-on
- Yes
- Version history
- Yes
RecognisedDocumentedFree planFree trialPlatforms€4.50/mofirst paid tier About BlueSpiceVisit site - Free planFree trial AndroidapiiOSLinuxmacOSWebWindows
- Free plan
- Yes
- Single sign-on
- Yes
- Version history
- Yes
RecognisedDocumentedFree planFree trialPlatforms - Free plan AndroidiOSmacOSWebWindows
- Free plan
- Yes
- Paid from
- 10 /user/mo
- AI search or answers
- Yes
- Semantic search
- Yes
- Single sign-on
- Yes
- Version history
- Yes
RecognisedDocumentedFree planFree trialPlatforms$10/mofirst paid tier About NotionVisit site - Free planFree trial AndroidapiextensioniOSWebWindows
- Free plan
- Yes
- Paid from
- 0.99 /user/mo
- Single sign-on
- Yes
- Version history
- Yes
RecognisedDocumentedFree planFree trialPlatforms$0.99/mofirst paid tier About ProProfs Knowledge BaseVisit site - Free plan WebWindowsmacOS
- Free plan
- Yes
- Paid from
- 6.67 /user/mo
- Single sign-on
- Yes
- Version history
- Yes
RecognisedDocumentedFree planFree trialPlatforms$6.67/mofirst paid tier About SlabVisit site - Free planFree trial AndroidapiiOSLinuxmacOSWebWindows
- Free plan
- Yes
- AI search or answers
- No
- Semantic search
- No
- Single sign-on
- Yes
- Version history
- Yes
RecognisedDocumentedFree planFree trialPlatforms$89/mofirst paid tier About PapyrsVisit site - Free trial AndroidapiextensioniOSmacOSWebWindows
- Free plan
- No
- Paid from
- 10 /user/mo
- Single sign-on
- Yes
- Version history
- Yes
RecognisedDocumentedFree planFree trialPlatforms$0.83/mofirst paid tier About SliteVisit site - Free trial AndroidapiextensioniOSself-hostedWeb
- Free plan
- No
- AI search or answers
- Yes
- Semantic search
- Yes
- Single sign-on
- Yes
- Version history
- Yes
RecognisedDocumentedFree planFree trialPlatforms€15/mofirst paid tier About EliumVisit site - Free trial extensionWeb
- Free plan
- No
- Paid from
- 6.3 /user/mo
- AI search or answers
- Yes
- Single sign-on
- Yes
- Version history
- Yes
RecognisedDocumentedFree planFree trialPlatforms$6.30/mofirst paid tier About KipwiseVisit site - Free plan WebiOSAndroid
- Free plan
- Yes
- Version history
- Yes
RecognisedDocumentedFree planFree trialPlatforms - Web
- Free plan
- No
- Single sign-on
- Yes
- Version history
- Yes
RecognisedDocumentedFree planFree trialPlatforms - Web
- Single sign-on
- Yes
- Version history
- Yes
RecognisedDocumentedFree planFree trialPlatforms - Free plan WebLinuxWindows
- Free plan
- Yes
- AI search or answers
- Yes
- Semantic search
- No
- Single sign-on
- Yes
- Version history
- Yes
RecognisedDocumentedFree planFree trialPlatforms - Free planFree trial Web
- Free plan
- Yes
- AI search or answers
- No
- Semantic search
- No
- Single sign-on
- Yes
RecognisedDocumentedFree planFree trialPlatforms₹49/mofirst paid tier About Flocci LibraryVisit site - Web
- Free plan
- No
- Single sign-on
- Yes
- Version history
- Yes
RecognisedDocumentedFree planFree trialPlatforms - WebWindowsmacOSiOSAndroidLinux
- Free plan
- No
- Single sign-on
- Yes
- Version history
- Yes
RecognisedDocumentedFree planFree trialPlatforms$10/mofirst paid tier About OutlineVisit site - Web
- Free plan
- No
- Paid from
- 8 /user/mo
- Single sign-on
- Yes
- Version history
- Yes
RecognisedDocumentedFree planFree trialPlatforms$8/mofirst paid tier About TettraVisit site - Free plan WebiOSAndroid
- Free plan
- Yes
RecognisedDocumentedFree planFree trialPlatforms - WebiOSAndroid
- Free plan
- No
- AI search or answers
- Yes
- Semantic search
- Yes
- Single sign-on
- Yes
- Version history
- Yes
RecognisedDocumentedFree planFree trialPlatforms - Web
- Free plan
- No
- Single sign-on
- Yes
- Version history
- Yes
RecognisedDocumentedFree planFree trialPlatforms - Web
- Free plan
- No
- Single sign-on
- Yes
- Version history
- Yes
RecognisedDocumentedFree planFree trialPlatforms$100/mofirst paid tier About KnowledgeOwlVisit site - Web
- AI search or answers
- Yes
- Semantic search
- Yes
- Single sign-on
- Yes
- Version history
- Yes
RecognisedDocumentedFree planFree trialPlatforms
Is your platform on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which internal knowledge base software is ranked first on The Geeks Club?
Confluence is ranked #1 of 23 with a score of 9.4. BlueSpice is second and Nuclino third.
How many of these have a free plan?
11 of the 23 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Slite has the lowest first paid tier we found: $0.83/mo.
How is this list ranked?
Ranked on how quickly a newcomer can get going: documentation depth, a free tier or trial, and the platforms it runs on. Paid placements never change a rank.
More in Productivity
All productivity listsNote-taking apps 209Calendar apps 188Project Management Software 170To-do list apps 143Daily Planner Apps 134Appointment Scheduling Software 131Writing Apps 119Meeting Notes Software 86Time Tracking Software 75Mind Mapping Software 70Online Whiteboard Tools 53Veterinary Appointment Scheduling Software 46