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NSA Security Enhanced Linux
Bonnie++ - my hard drive bottleneck testing program.
Maildir-bulletin - a program to deliver bulletin type emails to thousands of Maildir format mailboxes quickly. It should be about 1000 times faster than delivering via email aliases.
Postal - the mad email daemon! This program tests SMTP performance of mail servers by sending random email as fast as possible.
Tools for managing log files
Portslave - make a Linux machine into a terminal server
memlockd - daemon to lock critical system files in RAM to increase the chance that the sys-admin can recover the system from a DOS attack