Yes, it's timeboxing that I'm after. The guys in the IT departments in the other areas of the company use MS Project. But I'm a difficult bastard that wants to use my linux desktop at work and my mac at home.

I'm not super keen for an web based solution, OpenProj looks worth a try, it's a Java app. I'll also try project.net which is a web one.

Both seem to now be commercial but there are Open Source/Community versions of both it seems.