The main repository – crates.io

The crates.io website (https://crates.io/) provides a huge repository of crates to be used with Rust. Along with discoverability functions, such as tags and search, it allows Rust programmers to offer their work to others.

The repository itself provides APIs to interact with and a wealth of documentation pointers for cargo, crates in general, and so on. The source code is available on GitHub—we recommend checking out the repository for more information: https://github.com/rust-lang/crates.io.