1
Notion Free tier

All-in-one workspace commonly used as team wiki with databases, templates, and AI.

Free for personal use · Free Teams wanting a flexible wiki and knowledge base
Wiki Databases Templates AI
2
Confluence Free tier

Enterprise wiki and knowledge management platform integrated with Jira.

Free for 10 users · Paid from $5.75/user/mo Atlassian teams wanting enterprise documentation
Spaces Templates Jira Integration Permissions
3
Outline Free Open Source

Open-source knowledge base with beautiful design, real-time collaboration, and API.

Free Teams wanting a fast, beautiful open-source wiki
Open Source Real-Time API Markdown
4
Archbee Free tier

Documentation platform for product docs, API references, and internal knowledge bases.

Free for 5 users · Free Product teams wanting docs for users and developers
API Docs Knowledge Base Diagrams Custom Domains

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