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.

A full-featured framework for building command line applications (cli) with node.js

Multiplatform command line interface parsing for Kotlin

Struct-based argument parsing in Go

A header-only C++ argument parser library. Supposed to be flexible and powerful, and attempts to be compatible with the functionality of the Python standard argparse library (though not necessarily the API).

Command line argument parsing library

Bash argument parsing code generator

easy to use, powerful & expressive command line argument parsing for modern C++ / single header / usage & doc generation

CLI interfaces & config objects, from types