wiki style projct managment

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.

this is an interesting app that i must review in more details. not sure how the app handles security for resources and workflow. however , as an open source app,  Streber requires a PHP5 enabled web server + MySQL as the databbase.