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.

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sucrack is a multithreaded Linux/UNIX tool for brute-force cracking local user accounts via su.

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