# Introduction to plugins
Strapi is built around different types of plugins. Core plugins are essential for your Strapi application to function, and therefore cannot be deactivated. Pre-installed plugins, such as Internationalization, are installed in a default Strapi application. Additional plugins that extend and customize Strapi applications are available in the Marketplace.
✏️ NOTE
Core plugins which include the Content Manager and the Content-type Builder are documented in their own sections of the user guide as they are quite specific (see Introduction to the Content Manager and Introduction to the Content-type Builder). This Plugins section focuses on how to manage plugins in general and provides documentation for the other, non-core plugins.
From the admin panel, administrators are allowed to:
- discover additional plugins in the Marketplace (see Managing Marketplace plugins)
- review the currently installed plugins in Plugins