OpenAltFinder

Best Open Source Internal Knowledge Base in 2026

Platforms for building internal wikis, documentation hubs, and knowledge bases for teams and organizations.

2 open source internal knowledge base — ranked by GitHub stars. Browse all

Wiki.js

Wiki.js

Wiki.js | A modern and powerful wiki app built on Node.js

Alternative to:
NotionNotion
Docmost

Docmost

Open-source collaborative wiki and documentation platform, an alternative to Confluence and Notion.

Alternative to:
ConfluenceConfluence