picocli

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.

python-fire

Python Fire is a library for automatically generating command line interfaces (CLIs) from absolutely any Python object.

wuzz

Interactive cli tool for HTTP inspection

aws-nuke

Nuke a whole AWS account and delete all its resources.

websocat

Command-line client for WebSockets, like netcat (or curl) for ws:// with advanced socat-like functions

visidata

A terminal spreadsheet multitool for discovering and arranging data

reviewdog

🐶 Automated code review tool integrated with any code analysis tools regardless of programming language

You-Dont-Need-GUI

Stop relying on GUI; CLI **ROCKS**

ponzu

Headless CMS with automatic JSON API. Featuring auto-HTTPS from Let's Encrypt, HTTP/2 Server Push, and flexible server framework written in Go.

slack-term

Slack client for your terminal

streamlink

Streamlink is a CLI utility which pipes video streams from various services into a video player

vercel

Develop. Preview. Ship.