Zeal is a free and open-source offline documentation browser. Download docsets for the languages, frameworks, and libraries you use, search across all of them at once, and jump straight to the symbol, class, or function you need. Everything is stored locally, so lookups are instant and work without an internet connection.
Zeal is a native desktop application for Linux and Windows, requires no account, and offers docsets for every major language, framework, and tool.
Love Zeal’s offline library but want collaborative, hosted docs? Try Mintlify for AI-powered docs, GitBook for polished, versioned knowledge, ReadMe for interactive developer hubs, or Docusaurus for open‑source control.