Wraith is an open source IRC bot written in C++. It has been in development since late 2003. It is based on Eggdrop 1.6.12 but has since evolved into something much different at its core.
Hyenae is a highly flexible platform independent network packet generator. It allows you to reproduce several MITM, DoS and DDoS attack scenarios, comes with a clusterable remote daemon and an interactive attack assistant.
*** Hyenae is back ***
Hyenae will be continued here: https://sourceforge.net/p/hyenae-ng