spf13/viper
Go configuration with fangs
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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 420 days ago, with 170 contributors on GitHub.
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 loading, overriding, live watching, and nested key access with a consistent precedence order, simplifying complex app configuration needs.
- Use for building 12-factor Go applications requiring flexible config sources like JSON, YAML, TOML, and environment variables with live reload support.
- Use for integrating remote configuration management from etcd, Consul, or Firestore with optional encryption and automatic updates in distributed systems.
- Use for developing reusable Go modules that require isolated configuration subsets passed as Viper instances for clean, testable, and modular config handling.
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.
Daily snapshots
Stars gained per day, and how forks and open issues moved, from GStars' daily snapshots
Forks
2.2K-66
Open issues
165+32
Compared with peers in Backend
Fastest-growing repositories GStars tracks in this cohort for the week of Nov 8, by 7-day star growth
| Repository | Stars | +7d | Health | Last release |
|---|---|---|---|---|
| anthropics/skills | 192.3K | +5.2K | 75 | — |
| zed-industries/zed | 94.7K | +2.3K | 75 | 6 days ago |
| google/skills | 23.8K | +2.0K | 75 | — |
| NationalSecurityAgency/ghidra | 99.4K | +1.8K | 75 | 19 days ago |
| DuarteSantos8/openGym | 20.8K | +1.7K | 75 | 7 days ago |
| spf13/viper | 30.5K | — | 35 | 420 days ago |
| Category median | 94.7K | +2.0K | 75 | — |
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