With ConvertAll, you can convert any unit in the large database to any other compatible unit. If you want to convert from inches per decade, that's fine. Or from meter-pounds. Or from cubic nautical miles. The units don't have to make sense to anyone else.

Gutmann method based tools for securely wiping data from files, free disk space, swap and memory. This is a set of tools useful for security and anti-forensics actions.

GTick is an acoustical and graphical metronome application (usually used to support musicians at practising an instrument). It features a scale from 30 to 250 beats per minute and 2/4, 3/4, 4/4 and other meters. You need a sound device for using it.

GDB is a source-level debugger, capable of breaking programs at any specific line, displaying variable values, and determining where errors occurred. Currently, gdb supports C, C++, D, Objective-C, Fortran, Java, OpenCL C, Pascal, assembly, Modula-2, Go, and Ada. A must-have for any serious programmer.

Battery Monitor is a battery monitor for laptops. It displays the current status of the battery (charge/discharge and energy level) as well as some information about the general health of the cell.

Sync Mail Dir is a set of utilities to synchronize a pair of mailboxes in Maildir format, using SSH to transfer data.