# Plugins

Chamilo's plugin system lets you extend the platform without modifying core code. There are 56 plugins included with the distribution.

* [**Plugin Architecture**](https://docs.chamilo.org/2.x/developer-guide/developer-guide/plugins/plugin-architecture) — How plugins are structured
* [**Creating a Plugin**](https://docs.chamilo.org/2.x/developer-guide/developer-guide/plugins/creating-a-plugin) — Step-by-step guide to building a plugin
* [**Course Tool Plugins**](https://docs.chamilo.org/2.x/developer-guide/developer-guide/plugins/course-tool-plugins) — Plugins that add tools to courses