From IRC Wiki
|Platform:||Linux, BSD, Mac OS X, Solaris|
|License:||GNU General Public License|
Charybdis was first released in 2005, and was the successor of Hyperion, Charybdis is based on ircd-ratbox. Charybdis is currently used on networks such as StaticBox and SorceryNet and Freenodes ircd-seven is based on Charybdis.