The best open source alternative to Cinema 4D is Blender, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to Cinema 4D and five of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Cinema 4D are Bforartists (Free, Open Source), SculptGL (Free, Open Source), Dead Deer (Free, Open Source) and Fragmentarium (Free, Open Source).
Blender is the free and open-source 3D creation suite. It supports the entirety of the 3D pipeline—modeling, rigging, animation, simulation, rendering, compositing, video editing, and motion tracking.
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Blender vs Cinema 4D opinions
Most users think Blender is a great alternative to Cinema 4D.
Out of the box, Blender delivers quality right across the board from modelling to environment creation to audio integration, rigging and the list goes on. They listen to their users and are growing and evolving at a really good rate.
Positive comment • almost 3 years ago
maxemolianous 1- It's Free 2- It's Open-Source 3-It's Cross-Platform 4-It has a lot of features 5-It has a great community
Positive comment • almost 4 years ago
nabarun1011 Blender is complete 3D package that can do anything Cinema 4D can, plus more.
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.
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.