kIRCd - kasicass' IRC daemon
Simple IRC daemon, multi-implementation of many programming languages.
http://github.com/kasicass/kircd

[src/ace]           c++/ace-based implementation
[src/libevent]      c/libevent-based implementation

original rfc
http://tools.ietf.org/html/rfc1459

updated rfc
http://tools.ietf.org/html/rfc2810
http://tools.ietf.org/html/rfc2811
http://tools.ietf.org/html/rfc2812
http://tools.ietf.org/html/rfc2813