GitBook

GitBook is an intelligent technical documentation platform that serves as the knowledge layer for engineering teams and AI agents. Founded in 2014 and used by more than two million people — including teams at Zoom, FedEx, Nvidia, Snyk, and Google — GitBook enables teams to create, maintain, and share product documentation with a powerful visual editor and built-in AI features. What began as a developer-focused open-source documentation tool has evolved into a full knowledge system where humans and AI collaborate to keep documentation accurate, up-to-date, and deeply integrated with development workflows. GitBook supports docs-as-code workflows, branching, GitHub and Linear integrations, AI-powered writing assistance via GitBook Agent, authenticated access with SSO and SAML 2.0, and publishing for both internal teams and public-facing developer docs. The platform is designed for technical writers, developer advocates, and engineering teams who need documentation that evolves as fast as their products.