Users of Microsoft Project, Openproj, Gantt Project, GanttPV, KPlato, Gnome Planner, or Angelfalls (a maintained fork of Openproj) may be interested in "Faces".
Highlights from the intro on the home page:
ScreenshotsWho will benefit from faces?
Anybody who is tired spending hours of trying to get your project data into a software tool, that offers limited functionality.
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Creating and restructuring project plans is much faster than any grid or formular based method could be. The whole concept of faces aims to reduce your time, you have to spend for working on your project management tool. As project manager you need your time for managing your project, not your tool.
I haven't tried it myself, but I suspect it is not compatible with Microsoft Project.