A free software client.
Unreleased, incomplete. Not really in a state where development can be continued; if it even restarts, it'll happen in Objective-C.
This was going to be a trading spacesim (with some fighting), with systems connected by jumpgates.
Videos on YouTube (might be unpublished)
ZATEMAS is a web platform which includes a contest management system, and an online judge ("evaluator").
First published in 2006, it still lives. Because of its age, it happens to be written in PHP, and the judge is written in C++, pending some better times so a rewrite can happen.
This project was coauthored with Davor Cihlar.