MoonRay is DreamWorks’ open-source, award-winning, state-of-the-art production MCRT renderer.

The FLIP Fluids addon is a tool that helps you set up, run, and render high quality liquid fluid effects all within Blender, the free and open source 3D creation suite.

A tool for saving and loading custom constraints using the Rigify add-on in Blender.

Advanced shading language for production GI renderers

Alembic is an open framework for storing and sharing scene data that includes a C++ library, a file format, and client plugins and applications.

AnimAide is a free add-on for Blender that has some helpful tools for animation.