Sculptgl

SculptGL is a web sculpting application.

Triangle (It is not a freeware, until proved otherwise)

for generated Delaunay triangulations

Blender

Blender is the free and open source 3D creation suite. It supports the entirety of the 3D pipeline—modeling, rigging, animation, simulation, rendering, compositing and motion tracking, even video editing and game creation.

Fragmentarium

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.

Jashaka

Jashaka est un logicel d'édition vidéo et effets spéciaux.

FreeCAD

FreeCAD is a 3D CAD/CAE parametric modeling application. It is primarily made for mechanical design, but also serves all other uses where you need to model 3D objects with precision and control over modeling history.

Fragmentarium

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.

Dilay

Dilay us a 3D sculpting software.

Arbaro

Arbaro is a tree generator, compatible with blender (export Wavefront OBJ files). Very easy to use because of the little picture on the down right corner.

TexTuring