Lybniz is a simple desktop graph plotter. It can currently plot three functions and allows you to navigate the plot. Functions are entered in Python or C-like notation.

Perl is a scripting language used in many system scripts and utilities.

Wine is a free MS-Windows API implementation.

Regina is a software package for 3-manifold and 4-manifold topologists, with a focus on triangulations, knots and links, normal surfaces, and angle structures.

Slbackup-php provides the necessary functions to maintain a slbackup repository.