I have made, with the generous help of teaCup, a kit to allow you to use MayaPLE to make OFP animations.
MayaPLE is the freeware version of Maya. I find animation goes much faster with PLE than with OFPAnim. I still use OFPAnim, for checking my work, for example.
I am looking for beta tester feedback before releasing it. If you are interested, contact me with "MayaPLE" in the heading (so I know it's not spam).