Heyoka is a tuned up DNS tunneling tool that is build for speed, throughput as well as stealth.
to the project's page (hosted on sourceforge.net)
phrasen|drescher is a modular and multi processing pass phrase cracking tool. It comes with a number of plugins but a simple plugin API allows an easy development of new plugins.
sucrack is a multithreaded Linux/UNIX tool for brute-force cracking local user accounts via su.