tridi is 3D software based rendering created using Delphi 6, it require MMX,SSE to run. I has many cool effect such as Jittered texture filter, Shadow map (with jittered for smooth shadow map), unique lighting system (semi deffered redering)
Cadabra is a 3D Rendering Engine that makes 3D game development easy and is full of cool features targeted at the latest hardware available. This SourceForge.net project features add-ons, demos, and tools for the Cadabra 3D engine.
QRay is an interactive 3D modelling system in Java. It's built-in real-time raytracing engine implements the Quadric-CSG representation model and the Seed-Fill optimization method, which empower QRay to provide cool WYSIWYG 3D modelling functionalities.