OpenTTD is a clone of the Microprose game "Transport Tycoon Deluxe", a popular game originally written by Chris Sawyer. It attempts to mimic the original game as closely as possible while extending it with new features.
OOo4Kids is a simplified version of OpenOffice.org intended for year 7-12 students. Everything is made in collaboration with teachers and students, with the intention of contributing back to Apache OpenOffice.
Cainteoir Text-to-Speech is a GNOME/GTK+ GUI for the Cainteoir Text-to-Speech Engine. It allows you to listen to your documents or record them for use on the move using any of the eSpeak or MBROLA text-to-speech voices.