GStars
    Effect-TS

    Effect-TS/effect

    #161 this week

    Build production-ready applications in TypeScript

    cli
    observability
    clustering
    concurrency
    dependency-injection
    effect
    error-handling
    TypeScript
    MIT
    17.4K stars
    876 forks
    17.4K GitHub watchers
    Updated Oct 23, 2026
    View on GitHub

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    Where it stands

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

    Ranks #3 among CLI repositories tracked this week, and #3 over the last 30 days; #161 of 3,103 repositories GStars tracks this week (top 5%).

    5 releases in the last 90 days, the latest 1 day ago, with 393 contributors on GitHub.

    Peaked at #31 in the weekly ranking the week of Oct 4, its best in the past year.

    Use Cases & Benefits

    • Builds robust, maintainable, and type-safe production applications in TypeScript using functional programming principles.
    • Provides strong type safety and composable effects for managing concurrency, error handling, and dependency injection seamlessly.
    • Use for creating scalable backend services with complex workflows and reliable error management in TypeScript.
    • Use for developing observability-enabled applications integrating OpenTelemetry for monitoring and diagnostics.
    • Use for building CLI tools and platform applications requiring concurrency control and schema validation.

    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
    • Contributing guide: present
    • Code of conduct: present

    Watch-outs

    No watch-outs from GStars' checks.

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

    From the README

    Effect is a library for building robust, maintainable, type-safe, and production grade applications in TypeScript.

    Effect V4 is currently in beta. The main branch contains v4 development.

    The Effect v3 source code is available on the v3 branch.

    Issues and pull requests meant for Effect v3 should target the v3 branch.

    Excerpt from the Effect-TS/effect README on GitHub (MIT 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

    Jul 28: +41Jul 29: +13Jul 30: +20Jul 31: +13Aug 1: +10Aug 2: +16Aug 3: +14Aug 4: +12Aug 5: +10Aug 17: +7Aug 18: +18Aug 19: +29Aug 20: +36Aug 29: +7Sep 9: +10Sep 12: +16Oct 3: +280Oct 4: +191Oct 5: +78Oct 6: +76Oct 7: +33Oct 8: +26Oct 9: +22Oct 10: +16Oct 11: +18Oct 12: +15Oct 13: +17Oct 14: +15Oct 15: +19Oct 16: +11Oct 17: +11Oct 18: +6Oct 19: +8Oct 20: +11Oct 21: +6Oct 22: +14Oct 23: +4Oct 24: +9

    +2,350 stars over 89 days across 45 snapshot days; best day +280 on Oct 3.

    Forks

    876+242

    Open issues

    83-196

    Compared with peers in CLI

    Fastest-growing repositories GStars tracks in this cohort for the week of Oct 18, by 7-day star growth

    View category →
    Effect-TS/effect compared with CLI repositories by stars, 7-day star growth, health score and last release
    RepositoryStars+7dHealthLast release
    morluto/rea373.3K+88.2K605 days ago
    mattpocock/skills295.1K+11.3K7513 days ago
    stablyai/orca103.9K+9.5K40today
    HKUDS/CLI-Anything56.6K+3.3K53120 days ago
    yt-dlp/yt-dlp201.0K+2.5K752 days ago
    Effect-TS/effect17.4K+0751 day ago
    Category median201.0K+9.5K60—
    Compare effect with rea, skills, orca →

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