- Software development page of David Allen, which includes full source code for GTKeyboard, an application written for X using the GTK+ tookit, which allows physically disabled users to easily edit text files.
- A suite of free X Window drawing editors for PostScript, TeX, and web graphics production, as well as an embeddable and extendable vector graphic shell.
- An X program that will allow two machines to be controlled from the same keyboard and mouse. One machine must run X Window, the other can run X Window or Microsoft Windows.