Houdini third-party licenses

Houdini uses the following third party libraries:

Third-Party Tool Version License
Alembic 1.5.8 License
Apache Thrift 1.0.0 Apache 2.0 License
ATI Stream SDK 2.5 License
Audiere 1.9.4 LGPL License
Autodesk FBX (closed source) 2016
Berkeley DB 4.5.20 License
Blosc 1.5.0 License
Boost 1.55.0 Boost Software License
Bullet 2.83 License
bzip2 1.0.5 BSD-style License
COLLADA DOM 1.4.1 SCEA Shared Source License
cURL 7.35.0 License
decNumber License
demjson 1.3 LGPL License
ecdsa 0.13 MIT License
Expat 2.0 MIT License
Field3D 1.3.2 New BSD License
Fontconfig 2.8 License
FreeType 2.5.2 FreeType License
gettext 0.14.5 LGPL License
HDF5 1.8.11 License
Intel(R) Threading Building Blocks 43 License used under the Runtime Exception
jemalloc 3.6.0 License
KissFFT License
libiconv 1.14 LGPL License
libjpeg 6b License
libpng 1.2.44 License
libsndfile 1.0.10 LGPL License
libtiff 3.9.2 License
libxml2 2.8.0 License
llvm 3.2 License
NumPy 1.7.1 License
Open Dynamics Engine 0.10.1 BSD-style License
OpenEXR 2.2.0 License
OpenGL Extension Wrangler library 1.10.0 Modified BSD License
OpenSubdiv 2.5.1 Apache 2.0 License
OpenVDB 3.1.0 Mozilla Public License 2.0
paramiko 1.16.0 LGPL License
Ptex 2.0.32 License
pycrypto 2.5.0 Public Domain license
Pillow 2.9.0 PIL Software License
PySide 1.2.2 LGPL License
Python 2.6.4, 2.7.5 Python Software Foundation License
PySide 1.2.2 LGPL License
Qt 4.8.5 LGPL License v2.1
QuickTime SDK for Windows 7.3
rpyc 3.0.7 MIT License
simplejson 2.0.9 MIT License
SQLite 3.6.22 Public Domain license
zlib 1.2.7 License

Several icons in Houdini are used under license from the Tango icon project. See $HFS/houdini/config/Icons/LICENSE.txt.

Houdini’s help system additionally uses the following third party libraries:

Third-Party Tool Version License
Flask 0.10.1 License
Pygments 1.0 BSD License
Whoosh 2.7 BSD License
Flask Script 2.0.3 License

HQueue additionally uses the following third party libraries:

Third-Party Tool Version License
decorator 3.0.0 BSD License
FormEncode 1.2.1 Python Software Foundation License
Pylons 0.9.7 BSD License
Routes 1.10.1 BSD License
Tempita 0.2 BSD License
virtualenv 1.3.2 MIT License
WebError 0.9.1 MIT License
WebHelpers 0.6.3 BSD License
WebTest 1.1 MIT License
WSGIref 0.1.2 Python Software Foundation License
  • Houdini 15.5

    Getting started

    Using Houdini

    • Geometry

      How Houdini represents geometry and how to create and edit it.

    • Copying and instancing

      How to use copies (real geometry) and instances (loaded or created at render time).

    • Animation

      How to create and keyframe animation in Houdini.

    • Character

      How to rig and animate characters in Houdini.

    • Rendering

      How to render images and animation from the 3D scene.

    • Shading

      How to assign materials and create custom materials for shading.

    • Compositing

      Houdini’s compositing networks let you create and manipulate images such as renders.

    • Digital assets

      Digital assets let you create reusable nodes and tools from existing networks.

    • Import and export

      How to get scene, object, and other data in and out of Houdini.

    • MPlay viewer

      Using Houdini’s stand-alone image viewer.


    • Particles

      How to create particle simulations.

    • Dynamics

      How to use Houdini’s dynamics networks to create simulations.

    • Pyro

      How to simulate smoke, fire, and explosions.

    • Fluids

      How to set up fluid and ocean simulations.

    • Grains

      How to simulate grainy materials (such as sand).

    • Crowd simulations

      How to create and simulate crowds of characters in Houdini.

    • Hair and Fur

      How to simulate hair and fur.

    • Cloth

      How to create and simulate cloth and other flexible materials.



    • Menus

      Explains each of the items in the main menus.

    • Viewers

      Viewer pane types.

    • Panes

      Documents the options in various panes.

    • Windows

      Documents the options in various user interface windows.

    • Stand-alone utilities

      Houdini includes a large number of useful command-line utility programs.

    • Python Scripting

      How to script Houdini using Python and the Houdini Object Model.

    • Expression functions

      Expression functions let you compute the value of parameters.

    • HScript commands

      HScript is Houdini’s legacy scripting language.

    • VEX

      VEX is a high-performance expression language used in many places in Houdini, such as writing shaders.

    • Properties

      Properties let you set up flexible and powerful hierarchies of rendering, shading, lighting, and camera parameters.

    • Python Panels

      You can script custom pane types using Python to create your own UIs.

    • Galleries

      Pre-made materials included with Houdini.