Anima is a VFX & Animation pipeline library designed for and used in Anima Istanbul and written purely in Python.
It is also an example of how to use Stalker and build a pipeline on top of it.
Anima, supplies PyQt4/PySide UI's for Maya, Houdini, Nuke, Fusion and Photoshop and the UIs can be used in standalone mode where users can upload their files to server and automatically version them.