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 13 Update
Side Effects's latest version of Houdini 13 comes with new particles, finite element solver, lighting workflow and more.
Houdini - Apprentice Cook-Off Challenge
Join the Apprentice Cook-Off, a summer long challenge for Houdini users.