OpenRcon 
Description:
An open-source cross-platform RCON administration tool, written in C++
Other:
For more information please visit: http://openrcon.org/ You can find downloads here: https://sourceforge.net/projects/openrcon/
Please report any bug (or feature request) to: https://github.com/OpenRcon/OpenRcon/issues You can also join us on IRC: #openrcon on irc.freenode.net
If you want to join The OpenRcon Project, please let us know at IRC, or send an email to mail@openrcon.org.