# aux4 hub > aux4 hub is a package registry for aux4 CLI tools. Developers can find, install, and share command-line tools and packages built with aux4. Packages are installed using `aux4 aux4 pkger install /`. Browse public packages at https://hub.aux4.io/r/public/search. ## Popular Packages - [aux4/aux4](https://hub.aux4.io/r/public/packages/aux4/aux4): The aux4 CLI core — command-line interface generator - [aux4/pkger](https://hub.aux4.io/r/public/packages/aux4/pkger): Package manager for installing and publishing aux4 packages - [aux4/test](https://hub.aux4.io/r/public/packages/aux4/test): Markdown-based testing framework for aux4 commands - [aux4/config](https://hub.aux4.io/r/public/packages/aux4/config): YAML/JSON configuration file utility for aux4 - [aux4/ai-agent](https://hub.aux4.io/r/public/packages/aux4/ai-agent): AI agent framework for building instruction-driven agents with aux4 - [aux4/copilot](https://hub.aux4.io/r/public/packages/aux4/copilot): AI copilot with pluggable skills for aux4 - [aux4/encrypt](https://hub.aux4.io/r/public/packages/aux4/encrypt): Encryption utility for aux4 - [aux4/db](https://hub.aux4.io/r/public/packages/aux4/db): Database core for aux4 - [aux4/docker](https://hub.aux4.io/r/public/packages/aux4/docker): Docker integration for aux4 - [aux4/validator](https://hub.aux4.io/r/public/packages/aux4/validator): Input validation for aux4 - [aux4/template](https://hub.aux4.io/r/public/packages/aux4/template): Template engine for aux4 - [aux4/adapter](https://hub.aux4.io/r/public/packages/aux4/adapter): External adapters for aux4 ## Related - [aux4 Documentation](https://docs.aux4.io/llms.txt): Complete aux4 CLI documentation - [aux4 Website](https://aux4.io): Main aux4 website