GStars
    clap-rs

    clap-rs/clap

    A full featured, fast Command Line Argument Parser for Rust

    cli
    argument-parser
    argument-parsing
    command-line
    command-line-parser
    parsed-arguments
    Rust
    Apache-2.0
    17.0K stars
    1.3K forks
    84 GitHub watchers
    Updated Nov 10, 2026
    View on GitHub

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    Where it stands

    Rank, growth pace and release cadence relative to everything GStars tracks.

    1 release in the last 90 days, the latest 57 days ago, with 413 contributors on GitHub.

    Peaked at #52 in the weekly ranking the week of Feb 22, its best in the past year.

    Use Cases & Benefits

    • Provides a fast, full-featured command line argument parser for Rust applications.
    • Enables declarative or procedural creation of complex CLI parsers with support for subcommands and positional arguments.
    • Use for building robust CLI tools in Rust that require detailed argument parsing and validation.
    • Use for implementing multi-level command structures with subcommands in Rust projects.
    • Use for creating user-friendly command line interfaces with automatic help and error messages.

    Should you depend on it?

    License terms, project hygiene and risks, from GitHub metadata and GStars' snapshots.

    License

    Apache 2.0

    Permissive: commercial use, modification and redistribution are allowed with attribution; includes an explicit patent grant from contributors.

    Community files

    • README: present
    • Contributing guide: present

    Watch-outs

    No watch-outs from GStars' checks.

    General guidance from repository metadata, not legal advice. How we score

    From the README

    Command Line Argument Parser for Rust

    Dual-licensed under Apache 2.0 or MIT.

    Create your command-line parser, with all of the bells and whistles, declaratively or procedurally.

    Excerpt from the clap-rs/clap README on GitHub (Apache-2.0 license). © its authors.Read the full README on GitHub

    Daily snapshots

    Stars gained per day, and how forks and open issues moved, from GStars' daily snapshots

    Nov 7: +85Nov 8: +11Nov 9: +3Nov 10: +1Nov 11: +13

    +293 stars over 75 days across 11 snapshot days; best day +85 on Nov 7.

    Forks

    1.3K+70

    Open issues

    456+9

    Compared with peers in CLI

    Fastest-growing repositories GStars tracks in this cohort for the week of Nov 8, by 7-day star growth

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