Everything cURL
The book documenting the curl project, the curl tool, libcurl
Everything curl is an extensive, continuously maintained book that documents the entire curl ecosystem: the curl command-line tool, the libcurl library, the project’s history and development practices, and practical guidance for using and contributing to curl. The project is written as an open source book (CC-BY-4.0) and is available in multiple formats and locations, including an online website, PDF, and ePub so readers can pick the format that suits them. Content ranges from beginner-friendly tutorials and usage examples to deep dives into internals, protocols, bindings, build instructions, and advanced deployment scenarios, making the book useful for both casual users and experienced developers. The repository is large and actively maintained with many commits, organized chapters and helper scripts to build, index and publish the book; the site rendering is powered by mdBook and hosted for easy online reading.