GStars
    expr-lang

    expr-lang/expr

    Expression language and expression evaluation for Go

    backend
    bytecode
    configuration-language
    engine
    evaluator
    expr
    Go
    MIT
    8.1K stars
    534 forks
    8.1K GitHub watchers
    Updated Nov 4, 2026
    View on GitHub

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    Where it stands

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

    No releases in the last 90 days; the most recent was 264 days ago, with 86 contributors on GitHub.

    Use Cases & Benefits

    • Provides a safe, fast, and user-friendly expression language and evaluator designed for Go applications.
    • Ensures memory safety, side-effect-free execution, and static typing for reliable and performant expression evaluation.
    • Use for implementing dynamic configuration and rule engines in Go projects requiring safe expression evaluation.
    • Use for building customizable business logic and decision-making systems with user-defined expressions in Go.
    • Use for integrating complex filtering, validation, and conditional logic into Go-based workflows and automation tools.

    Should you depend on it?

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

    License

    MIT

    Permissive: commercial use, modification and redistribution are allowed with attribution.

    Community files

    • README: present

    Watch-outs

    No watch-outs from GStars' checks.

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

    About expr

    Expression language and expression evaluation for Go

    https://expr-lang.org

    Daily snapshots

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

    Forks

    534+10

    Open issues

    96+9

    Compared with peers in Backend

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

    View category →
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    expr-lang/expr8.1K—41264 days ago
    Category median94.7K+2.0K75—
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