I just can't keep my fingers off of the keyboard!
FreePlanner now includes GF/Buhlmann. FreePlanner still only supports OC, but now that I've gotten most of what I wanted to do done with OC, it's on to the world of CC.
Now you can compute schedules with both VPMB and GF/Buhlmann and also compare them side by side.
There's also a tissue analysis window for VPMB - GF to follow shortly.
Available for Mac Intel and Windows at
freeplanner - get it here..