diff --git a/README.md b/README.md
index d4f5357b..b7ba4701 100644
--- a/README.md
+++ b/README.md
@@ -157,6 +157,7 @@ See also [Static Site Generators](#static-site-generators) and  [Content Managem
   * [Friendica](http://friendica.com/) - Social Communication Server ([Source code](https://github.com/friendica/friendica)) `AGPLv3`
   * [Gnu Social](http://gnu.io/social/) - social communication software for both public and private communications
   * [Hubzilla](https://github.com/redmatrix/hubzilla) - independent general-purpose websites that not only connect with their associated members and viewers, but also connect together `MIT` `PHP`
+  * [HumHub](https://www.humhub.org/) - A flexible kit for private social networks ([Source Code](https://github.com/humhub/humhub)) `AGPLv3` `PHP`
   * [Isso](http://posativ.org/isso/) - a lightweight commenting server written in Python and JavaScript. It aims to be a drop-in replacement for Disqus ([Source code](https://github.com/posativ/isso)) `MIT` `Python`
   * [Jappix](https://jappix.com/) - Jappix is an open social platform, that let's you easily get or keep in touch with everyone.
   * [Movim](https://movim.eu/) - A brand new social network, full of awesome features in a modern and smart interface