Everything cURL
The book documenting the curl project, the curl tool, libcurl
...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.