- Side Effects Software , Makers of Houdini
- Derivative Inc. , spin-off of Side Effects Software and maker of TouchDesigner.
- odforce - a Houdini artist community site
- 3Daet , A project-based Houdini site built by its users.
- VanArts , school offering professional Houdini training.
Wiki - http://en.wikipedia.org/wiki/Houdini_(software)