GitBook is a dual-billing documentation platform that combines per-site and per-user pricing to provide flexible documentation solutions for teams of all sizes.

GitBook offers per-site documentation with four pricing tiers: Free for gitbook.io subdomains, Premium at $65 per site per month, Ultimate at $249 per site per month with AI features, and Enterprise with custom pricing. The platform includes AI Assistant for answering questions, GitBook Agent for automated content tasks, adaptive content personalization, and authenticated access for private documentation.
API development platform for teams
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Postman is the leading API development platform offering tools for API design, testing, documentation, and collaboration across teams of all sizes.
Free GitHub analytics and open source intelligence platform
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OSSInsight provides deep analytics on over 10 billion GitHub events with real-time insights into open source repositories, developers, and organizations including stars, commits, pull requests, and community health metrics.
The Intelligent Knowledge Platform for AI-native documentation
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Mintlify is an AI-native documentation platform designed for developers that helps teams create and maintain world-class documentation. Built for both humans and AI, it integrates intelligence into every part of the documentation lifecycle.