diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -537,6 +537,7 @@ Some [Groupware](#groupware) solutions also feature file sharing and synchroniza
   * [FileTea](https://filetea.me/) - Anonymous, volatile file sharing: does not store any file on server. Bridges a download to the recipient’s browser with an upload from the source’s browser. ([Source Code](https://github.com/elima/FileTea)) `AGPLv3` `C`
   * [instant.io](https://github.com/feross/instant.io) - Streaming file transfer over WebTorrent. ([Demo](https://instant.io)) `MIT` `Nodejs`
   * [Opentracker](http://erdgeist.org/arts/software/opentracker/) - Open and free bittorrent tracker. It aims for minimal resource usage and is intended to run at your wlan router. ([Source Code](http://erdgeist.org/gitweb/opentracker/)) `Beerware` `C`
+  * [rartracker](https://github.com/swetorrentking/rartracker) - Complete private bittorrent tracker. `WTFPL` `PHP`
   * [ShareFest](https://github.com/peer5/sharefest) - Web based p2p file sharing built on WebRTC Data Channels API. ([Demo](https://www.sharefest.me/)) `Apache` `Nodejs`
 
 #### Single-click/drag-n-drop upload