ngplant looks intreasting, a few similar features to xfrog i noticed.
bgen3 would be nice as a standalone application as i stear very clear from Blender until they fix that awful UI. It's funny because i had a easier time using and understanding xfrog's UI then ever making sense with Blender. Heck, i could never even load a python script.
Anyways, ngplant is worth a go.
Thank You for finding that software.