Some time (years!) ago I wrote about GDI|Explorer ("organization, communication and workflow tools for (...) creative individuals, workgroups collaborating on-site or via the internet as well as large studios operating worldwide.")
Now I see that they also have a freeware auxiliary software called GDI|Queue for distributed rendering, offering a graphical interface to Condor (High Throughput Computing, University of Wisconsin).
Currently GDI|Queue integrates with Maya, XSI and 3dsmax.
However, I don´t know if this software is useful at all without actually having the (commercial) GDI|Explorer.