http://www.worldviz.com/vizard/details.html
Key Reasons Why Developers Use Vizard
Performance The Vizard rendering core is a high-performance graphics engine developed in C/C++ using the latest OpenGL extensions. You get to develop in PythoN while Vizard automatically transforms your project into a Vizard byte code abstraction layer (LAXMI) that efficiently directs the rendering core. Graphics performance is maximized through view frustum culling and state sorting of properties such as textures and materials. As GPU's get faster and faster, LAXMI allows your application to take full advantage of advances in graphics pipeline architecture.
Simplicity Vizard is both an integrated development environment (IDE) and high-level graphics library seamlessly blended into the PythoN programming language. Our IDE simplifies the tasks of maintaining your digital assets, provides real-time viewing and adjustment of your scenes, and gives you sophisticated tools for debugging your scripts. Most important, however, is the library’s power at encapsulating many complex graphics or hardware interface issues (literally thousands of lines of OpenGL code) into a single line of Vizard Python script code.
Community Vizard has been used by developers of virtual reality applications and scientific visualization for over a decade. This track record means you can count on Vizard’s features to be both rich and robust, and able to meet the challenges of the RealTimeVR? community. Given the size of the Vizard community, you’ll be able to find help when you need it and be assured you’re investing in a long-term platform.