TouchDesigner is not available for Linux but there are plenty of alternatives that runs on Linux with similar functionality. The best Linux alternative is Blender, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to TouchDesigner and 11 are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to TouchDesigner are Autodesk Maya (Paid), Pure Data (Free, Open Source), Houdini (Paid) and Fugio (Free, Open Source).
Pd (aka Pure Data) is a real-time graphical programming environment for audio, video, and graphical processing. It is the third major branch of the family of patcher programming languages known as Max (Max/FTS, ISPW Max, Max/MSP, jMax, etc.
Houdini covers all the major areas of 3D production, including:* Modeling - All standard geometry entities including Polygons, (Hierarchical) NURBs/Bezier Curves/Patches & Trims, Metaballs* Animation - Keyframed animation and raw channel manipulation (CHOPs), motion...
Orca is an Esoteric Programming Language and live-coding environment for musical experimentation. In Orca, each letter of the alphabet is an operation, lowercase letters operate on bang, uppercase letters operate each frame.
Fragmentarium is an open source, cross-platform IDE for exploring pixel based graphics on the GPU. It is inspired by Adobe's Pixel Bender, but uses GLSL, and is created specifically with fractals and generative systems in mind.
Dead Deer is a 3D modeler, 3D game maker, and a 3D demo maker designed to create games. The scripting language allows you to code interactions in pseudo-C with the animation and synthesizes your rendering with your shaders.