Similar to Blender

Java OpenGL

JrMan

MASSIVE (software)

Mesa (computer graphics)

Metasequoia (software)

MeVisLab

Autodesk Mudbox

OpenSceneGraph

Poser (software)

Quartz Composer

Rhinoceros 3D

Sketchfab

Strata 3D

Tekla Structures

Terragen

V-Ray