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Picocli is a modern framework for building powerful, user-friendly, GraalVM-enabled command line apps with ease. It supports colors, autocompletion, subcommands, and more. In 1 source file so apps can include as source & avoid adding a dependency. Written in Java, usable from Groovy, Kotlin, Scala, etc.
Argh! A minimalist argument handler.
A repository of namespaced, composable shell (bash, sh and dash) function libraries. Takes aware the pain of shell scripting, making it robust and reusable. Includes secure curl usage, JSON, XML and Debian control file parsers, dependency documentation via attributes, and more. Batteries ARE included.
Opinionated declarative CLI args, ENV vars and config files
Command line for your projects
A command line and config file parser for DLang
Define a Go struct. Get a CLI that an agent can discover, call, sandbox, and debug. Flags, env vars, config files, validation, JSON Schema, MCP, structured errors, and WASM. Built on Cobra.
FlashFlags is an ultra-fast, zero-dependency, lock-free command-line flag parsing library for Go. Originally built for Argus, it provides great performance while maintaining simplicity and ease of use.
Golang struct-tag based configfile and flag parsing