rustdoc is the tool used in the Rust ecosystem to generate documentation from the code. Generating documentation from code isn’t a new concept, but I find that rustdoc’s implementation is the best one yet. In this blog post, we’ll analyze other tools like it for other languages (Sphinx for Python, Doxygen for C++ and other, JSDoc for JavaScript and Godoc for Go) seeing examples from real-world projects in each one of them.