Diego Inácio has created several geometry tools for Houdini, using Python.
Arnold for Houdini
Solid Angle have released the first public release of their Arnold renderer for Houdini.
Houdini Demo Reel 2014
Side Effects Software has released the 2014 Demo Reel featuring the work of Houdini customers worldwide.
Houdini Engine for Autodesk Maya
SideFX have released Houdini Engine for Maya, with 3ds Max and Unreal versions coming soon.