Article on Ray Tracing in the student magazine of the ACM.

Personal page with links to programs for modeling, Ray tracing, converting, and animating. Plus models for various ray tracers. Windows, MacOS and Unix.

The FAQ about speed optimization for raytracing for use in realtime raytracing.

Plug-in for Rhino, uses both raytracing and radiosity to create single-frame images and animations. Product description, gallery, training, evaluation download, and purchasing. For Windows.

Information about raytracing in general, with a how-to section and an A-Z reference. Technical articles and a gallery of images renderd with the VRWorld4 raytracer developed by the author, and humour.

Raytracing system written in Common Lisp. It trys to become good classical raytracer: reasonably efficient, with a good selection of primitives, advanced texturing capabilities, animation support, and probably integration of the scripting environment ...

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

Open Source Raytracer with a scene description language that provides constructs for programming like loops and functions. Its written in C++ and runs on Windows and Linux/Unix.

A GUI the YAFRAY raytracer written in Python. Downloads, screenshots, and FAQ. Available for Linux and Windows.

Regular awards for best raytraced still images and animations submitted by the public. Recent winners, voting on the current round, and the topic and rules for submitting to the next round.