ChivAdmin Desktop App: RCon Client for Chivalry Medieval Warefare (Mutator mod exluded)
Download ChivAdmin from GitHub. You need to install Java 8 in order to run the jar file. Download it from here in case you don't have it installed: https://www.java.com/de/download/
See the in-app readme for more info.
http://forums.tornbanner.com/topic/23235/chivadmin-rcon-tool
http://steamcommunity.com/sharedfiles/filedetails/?id=639237138&tscn=1469984708