Click is a Python package for creating beautiful command-line interfaces with minimal code. Uses decorators for a clean, composable API. Powers Flask, AWS CLI, and many other tools. Use Case Use Click when you need to: Build CLI tools in Python Create nested command groups Handle complex option parsing Generate …

Cobra is a powerful library for creating modern CLI applications in Go. Used by kubectl, Hugo, GitHub CLI, and many other popular tools. Provides commands, subcommands, flags, and automatic help generation. Use Case Use Cobra when you need to: Build complex CLI tools with subcommands Provide consistent flag handling …