There is Planner (which has had other names, including mrproject and once being part of GNOME Office):<p><a href="http://www.simpleprojectmanagement.com/planner/" rel="nofollow">http://www.simpleprojectmanagement.com/planner/</a><p>I've only dabbled with an ancient version of it installed with RHEL3, and it seemed fine. I'm not sure it is being updated much lately.