GStars
    spf13

    spf13/viper

    #243 this week

    Go configuration with fangs

    backend
    Go
    MIT
    30.5K stars
    2.3K forks
    30.5K GitHub watchers
    Updated Oct 5, 2026
    View on GitHub

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    Where it stands

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

    Ranks #243 of 2,841 repositories GStars tracks this week (top 9%).

    No releases in the last 90 days; the most recent was 392 days ago, with 170 contributors on GitHub.

    Gained 87% fewer stars in the last 90 days than in the 90 days before.

    Use Cases & Benefits

    • Provides a comprehensive configuration management solution for Go applications supporting multiple file formats, environment variables, flags, and remote key/value stores.
    • Enables seamless configuration handling with precedence, live watching, and support for encrypted remote configs, simplifying complex app setups.
    • Use for managing configuration in 12-factor Go applications requiring flexible, multi-source config loading and overrides.
    • Use for building cloud-native Go services that need dynamic config updates from remote stores like etcd or Consul with encryption support.
    • Use for developing reusable Go modules that require isolated, nested configuration subsets for independent instantiation and testing.

    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 commits in the last six months (last push Jan 2026).

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

    From the README

    Viper v2 feedback

    Viper is heading towards v2 and we would love to hear what you would like to see in it. Share your thoughts here: https://forms.gle/R6faU74qPRPAzchZ9

    Thank you!

    Note: Viper uses Go Modules to manage dependencies.

    Viper is a complete configuration solution for Go applications including 12-Factor apps. It is designed to work within an application, and can handle all types of configuration needs and formats. It supports:

    Viper can be thought of as a registry for all of your applications configuration needs.

    Excerpt from the spf13/viper 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 11: +4Jul 27: +3Jul 28: +15Jul 29: -1Jul 30: +7Jul 31: +1Aug 5: +2

    +35 stars over 88 days across 15 snapshot days; best day +15 on Jul 28.

    Forks

    2.3K+28

    Open issues

    143+11

    Compared with peers in Backend

    Fastest-growing repositories GStars tracks in this cohort for the week of Oct 4, by 7-day star growth

    View category →
    spf13/viper compared with Backend repositories by stars, 7-day star growth, health score and last release
    RepositoryStars+7dHealthLast release
    DuarteSantos8/openGym11.1K+7.1K603 days ago
    vectorize-io/hindsight49.3K+2.9K75today
    NationalSecurityAgency/ghidra86.3K+2.7K7522 days ago
    anthropics/knowledge-work-plugins29.5K+2.6K75—
    666ghj/MiroFish79.0K+1.9K23220 days ago
    spf13/viper30.5K+035392 days ago
    Category median49.3K+2.7K75—
    Compare viper with openGym, hindsight, ghidra →

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