Wikipedia
Ubidesk
Ubidesk is a web-based software that provides an online workspace for project collaboration. Provided as Software as a service, Ubidesk is platform independent and accessible via a web-browser without installing any application on the client side. Ubidesk offers file sharing, document collaboration, task management, and group scheduling. Multiple projects can be created with a separate access control for each project, which enables multi-level security clearance within a workspace.