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Best Outline Alternatives in 2026

12 apps from knowledge base software ranked against Outline on the same published basis.

  1. 1
    Nuclino Free plan AndroidapiiOSLinuxMac Free8.2
    Outline vs Nuclino
  2. 2
    ProProfs Knowledge Base Free plan AndroidapiextensioniOSWeb $0.99/mo8.2
    Outline vs ProProfs Knowledge Base
  3. 3
    Confluence Free plan AndroidiOSself-hostedWeb $5.42/mo8.1
    Outline vs Confluence
  4. 4
    BlueSpice Free plan self-hosted €4.50/mo7.9
    Outline vs BlueSpice
  5. 5
    Zoho Learn Free plan WebiOSAndroid Free7.9
    Outline vs Zoho Learn
  6. 6
    GitBook Free plan apiWeb $65/mo7.9
    Outline vs GitBook
  7. 7
    Wiki.js Free plan apiLinuxMacself-hostedWeb Free7.9
    Outline vs Wiki.js
  8. 8
    Docmost Free plan apiself-hostedWeb 7.8
    Outline vs Docmost
  9. 9
    Slab Free plan WebWinMac $6.67/mo7.8
    Outline vs Slab
  10. 10
    Stack Internal Free plan Web Free7.6
    Outline vs Stack Internal
  11. 11
    BookStack Free plan apiLinuxself-hostedWeb £37.50/mo7.6
    Outline vs BookStack
  12. 12
    tela Free plan Web Free7.4
    Outline vs tela
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