A project management tool first mentioned here.
This has been under active development so I spent some time digging but I haven't seen a lot of project tools gain traction here on the site so I didn't go too far.
Testing so far: I used the platform-independant JAR version but unfortunately the program still writes .ganttproject setings to the USER folder. I tested the effort user SCarp built back in 2009 without success as well as a similar batch file setup to that of user bro's muCommander. So far no luck.
http://www.ganttproject.biz/