I built a non-linear editor/clip mixer for Houdini. On pre-sale right now (PC only, while I continue to work on the Mac version).

It's great for bringing in a bunch of different FBX mocap files and mixing and blending them together with a graphical interface.

https://www.youtube.com/watch?v=zoZkDBKZ_74 [www.youtube.com]

https://gum.co/houdiniClipMixer [gum.co]