Diego Inácio has created several geometry tools for Houdini, using Python.
Houdini Roadmap Presentation
Have a look at the Houdini roadmap, a look into the Houdini of today and the Houdini of tomorrow.
Houdini Engine for 3ds Max
Houdini Engine, the 3ds Max plug-in enabling Max artists to import and edit content created within Houdini, is now available for free.
OTOY expands OctaneRender integration to NUKE, Houdini, Unreal Engine 4, and more
OTOY expands OctaneRender integration to NUKE, Houdini, MotionBuilder, Unreal Engine 4, and Digital Molecular Matter Engine.