tuxmath command

rawr! is based on rarlab's os x command line utility

Images can be resized with the use of the command-line tool sizimg.

Gnuplot is a portable command-line driven interactive data and function utility.

It can change the format of the screenshots (command/Shift/3 or 4).

Quickly create disk image (dmg) archives.

Robust spam filter for major email clients.

Archive and search documents of various formats.

Auto-complete partially typed words in BBEdit.