During last few years I have been involved in a number of projects. Some of them have failed, some succeeded ;-)
Wikidot.com
The most recent project, quite likely to become a great success. Wikidot.com is a free wiki hosting service that allows you to start your own Wiki.
http://www.wikidot.com
Openlabs.pl
Business project to create a financial backbone for Wikidot and a few other related projects. Not finished.
http://www.openlabs.pl
Wikidot.org
An open-source release of the Wikidot.com software. Quite likely to succeed but requires a lot of work.
http://www.wikidot.org
OZONE Web Application Framework
A PHP Framework for building advanced web application — just like Wikidot. Uncertain future — quite likely to become an integral part of Wikidot.
http://www.ozoneframework.org
JCuckoo
Distributed, large scale computing in Java. Never finished and rather a failure.
http://jcuckoo.sourceforge.net