dfrs displays the amount of disk space available on the file system containing each file name argument. If no file name is given, the space available on all currently mounted file systems is shown.

The Visualization Toolkit (VTK) is an open-source software system for 3D computer graphics, image processing, and visualization.

This is a mashup of sorts, inspired by some beautiful forms found in both Fira Mono, Libertinus Mono, and Courier.

Sudoku solver that contains several logical resolution methods, as well as brute force selection.

This is the Elstob font (named for the eighteenth-century Anglo-Saxonist Elizabeth Elstob) is based on the Double Pica commissioned by Bishop John Fell in the seventeenth century.

Kaidan is a simple, user-friendly and modern chat client. It uses the open communication protocol XMPP (Jabber).