Looking for Project Management Software

I’ve been looking long and hard for a comprehensive Project Management solution and found two that I would love to use but it doesn’t look like I can and/or I just don’t know how to implement them on my VPS.

I’ve looked at Liferay Portal and Alfresco. I know I can’t run Alfresco due to the servers at Dreamhost are Debian. But I was wondering if anyone is using Liferay Portal or another PM software.