Realstorm
A realtime raytracing engine with downloadable benchmark, screenshots and information. Windows 95/98/me/2000.

Realtime Raytracing Maillist
Discuss programming techniques, algorithms and productions related to realtime raytracing, both software or hardware based.

The Rearview Rendering Engine
A game engine aiming towards three dimensional computer graphics which fits both human perception and the shape of the real world better than common polygon engines do. Linux.

The Recursive Ray Tracing Algorithm
Explains how the basic ray tracing algorithm with reflection, transparency and shadows works.

Renderpark
Test bed system for physically based photo-realistic image synthesis, mostly radiosity based. Unix based.

Tachyon Parallel / Multiprocessor Ray Tracing System
A ray tracer distributed as C source, supporting almost every Unix version, Windows NT and Mac OSX.

vlib
An open source volume modeling and rendering library for unix. The interface facilitates the majority of significant developments in the field to date.

YASRT Raytracer
A simple raytracer in development, it supports the basic features of a raytracer along with multi-threading. Many platforms are supported (Win32, Linux, and iPAQ).

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