Streber is a free wiki driven project management tool written in php5. Freelancers and small teams can easily setup projects and keep track of tasks, issues, bugs, efforts etc. Project-User-Rights can be adjusted e.g. to provide clients a limited view of the current project state.
It supports very easy Installation with FTP.
From the most interesting company in the IT area... "Continuous Integration, Source Control, a Wiki and a Bug-Tracker are all cornerstones of a functioning Agile development project. But if you've not configured them all before, it can be a bit tricky - a