rendering

A stand-alone graphics debugging tool

Mandelbulber creatively generates three-dimensional fractals.

F3D is a fast and minimalist 3D viewer desktop application

A modern open source rendering engine for animation and visual effects

Avogadro is an advanced molecular editor designed for cross-platform use in computational chemistry, molecular modeling, bioinformatics, materials science, and related areas. It offers flexible rendering and a powerful plugin architecture.

An Open, Scalable, Portable, Ray Tracing Based Rendering Engine for High-Fidelity Visualization.