1
GitBook Free tier

Modern documentation platform that syncs with Git repositories and provides a polished reading experience.

Free for public open-source docs · Paid from $6.70/user/mo Teams that want beautiful docs with Git-backed version control
Git Sync WYSIWYG Editor Custom Domains Search
2
Mintlify Free tier

Documentation platform focused on beautiful API docs with built-in components and analytics.

Free Hobby plan with 1 editor · Paid from $150/mo Developer-facing products that need polished API documentation
API Playground OpenAPI Support Analytics MDX Components
3
ReadMe Free tier

Developer hub platform for creating interactive API documentation with built-in metrics and user management.

Free for 1 project with basic features · Paid from $99/mo API-first companies that want a full developer hub with usage metrics
API Explorer Usage Metrics OpenAPI Import Custom Branding
4
Docusaurus Free Open Source

Meta's open-source static site generator optimized for building documentation websites with React.

Free Open-source projects and teams that want full control over their docs site
Static Site Versioning MDX Support i18n
5
Notion Free tier

All-in-one workspace used by many teams as their primary documentation and knowledge management tool.

Free for personal use · Paid from $8/user/mo Teams wanting docs, wikis, and knowledge bases in one place
Wikis Databases Templates AI Assist
6
Slite Free tier

Team knowledge base with AI-powered search that surfaces the right information instantly.

Free for 50 docs · Free Teams wanting a simple, searchable knowledge base
AI Search Templates Channels Ask Feature
7
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
8
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
9
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
10
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
11
Tettra Free tier

Simple internal knowledge base with AI-powered answers and Slack integration.

Free for up to 5 users · Free Teams wanting a simple internal knowledge base
AI Answers Slack Integration Verification Templates

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