# Development

<p class="callout info">This software is released under the [GPL-3.0 license](https://opensource.org/license/gpl-3-0).</p>

The software was developed as a fork of [Sonarr](https://hub.subspace.services/books/sonarr "Sonarr"). Radarr is made available for Docker through the efforts of [LinuxServer.io](https://docs.linuxserver.io/images/docker-radarr/) and their commitment to simplifying self-hosting.

You can learn more about how to contribute to Radarr through their [documentation](https://wiki.servarr.com/radarr/contributing).

The Radarr development team also accepts [donations](https://radarr.video/donate).