clap

clap is a command line argument parser library for Rust, described by its maintainers as full featured and fast. It lets developers define a command-line interface either declaratively or procedurally, and is distributed as a crate that can be added to a project with `cargo add clap`. The project is dual-licensed under Apache 2.0 or MIT, giving users a choice between the two licenses. Documentation is hosted on docs.rs, and the repository includes an examples directory for reference. Development activity is visible through CI build status, coverage reporting, and a contributor graph. The project also lists sponsorship tiers (Gold, Silver, Bronze, Backer) via Open Collective. The README itself is brief and points readers to docs.rs and the examples folder for details on features and usage.