1. github.com/spf13/viper

Go configuration with fangs

2. github.com/joho/godotenv

A Go port of Ruby's dotenv library (Loads environment variables from .env files)

AI-generatedGo port of the Ruby dotenv library for environment variables.

3. github.com/hashicorp/hcl

HCL is the HashiCorp configuration language.

AI-generatedHuman- and machine-friendly configuration language toolkit.

4. github.com/kelseyhightower/envconfig

Golang library for managing configuration data from environment variables

AI-generatedEnvironment variable decoder and configuration settings parser.

5. github.com/go-ini/ini

Package ini provides INI file read and write functionality in Go

AI-generatedINI file read and write functionality in Go.

6. github.com/knadh/koanf

Simple, extremely lightweight, extensible, configuration management library for Go. Supports JSON, TOML, YAML, env, command line, file, S3 etc. Alternative to viper.

AI-generatedLibrary for reading configuration from various sources and formats.

7. github.com/ilyakaznacheev/cleanenv

✨Clean and minimalistic environment configuration reader for Golang

AI-generatedA lightweight Golang library for parsing and reading configuration files.

8. github.com/a8m/envsubst

Environment variables substitution for Go

AI-generatedEnvironment variables substitution for Go programs.

9. github.com/unknwon/goconfig

Package goconfig is a fully functional and comments-support configuration file (.ini) parser.

10. github.com/lalamove/konfig

Composable, observable and performant config handling for Go for the distributed processing era

AI-generatedConfig package for Go with dynamic reloading.

11. github.com/gookit/config

📝 Go configuration manage(load,get,set,export). support JSON, YAML, TOML, Properties, INI, HCL, ENV and Flags. Multi file load, data override merge, parse ENV var. Go应用配置加载管理，支持多种格式，多文件加载，远程文件加载，支持数据合并，解析环境变量名

AI-generatedA simple and full-featured Go application configuration management library.

12. github.com/heetch/confita

Load configuration in cascade from multiple backends into a struct

AI-generatedConfig loader for various backend sources and formats.

13. github.com/koding/multiconfig

Load configuration from multiple sources in Go

AI-generatedA Go package for loading configurations from multiple sources.

14. github.com/uber-go/config

Configuration for Go applications

15. github.com/hashicorp/terraform-config-inspect

A helper library for shallow inspection of Terraform configurations

AI-generatedTerraform module metadata extractor Go library.

16. github.com/sethvargo/go-envconfig

A Go library for parsing struct tags from environment variables.

17. github.com/hashicorp/hcl2

Former temporary home for experimental new version of HCL

AI-generatedHuman-friendly structured configuration language toolkit for devops tools.

18. github.com/magiconair/properties

Java properties scanner for Go

AI-generatedGo library for reading and writing.properties files.

19. github.com/subosito/gotenv

Load environment variables from `.env` or `io.Reader` in Go.

20. github.com/openconfig/ygot

A YANG-centric Go toolkit - Go/Protobuf Code Generation; Validation; Marshaling/Unmarshaling