> For the complete documentation index, see [llms.txt](https://docs.fylr.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.fylr.io/plugins.md).

# Plugins

The default feature set of fylr can be extended with plugins — where they come from, how they are installed, and what changes with fylr 6.35.

Plugins extend fylr's default feature set. Some are developed by Programmfabrik, some by our partners and customers; some are Open Source, some are private, and some are paid modules your fylr license has to grant.

## Where to start

* [**Plugin Overview**](/plugins/overview.md) — what is on offer: the marketplace catalog, and the plugins that are installed by URL instead.
* [**Plugin Manager**](/plugins/plugin-manager.md) — the screen: installing, enabling, configuring and updating plugins in your instance, and the marketplace that installs them.
* [**Individual plugins**](/plugins/individual.md) — the plugins that have their own page here, and where the documentation for all the others lives.
* [**Disk to URL plugin migration**](/plugins/disk-to-url-migration.md) — fylr 6.35 stops shipping plugins on disk. What the upgrade does with the plugins you have, and what to do before it.

## For developers

Writing a plugin — the manifest, extensions, callbacks, custom data types, packaging and release — is described in the [developer documentation](/for-developers/plugin.md). To load a plugin you are working on from a directory rather than installing it, see [Load Custom Plugins](/for-system-administrators/configuration/custom-plugin.md).