PCity is a procedural city generator. It uses a configuration file and few maps (e.g. population density or a height map) and can be tuned via various parameters. Its features include street network generation, building generation, texture generation from a texture library, and a visualization engine.
ZOE (formerly OGLE) is a simple OpenGL graphics engine written entirely in Python. Its primary focus is rapid prototyping and experimentation, so it only supports the barest essentials, with focus on wire frames. Special emphasis is placed on particle systems (in which non-interacting particles follow simple rules). Some familiarity with OpenGL is expected, although when exploiting the particle system abstractions, no specific OpenGL knowledge is required. The demos included are the obligatory spinning polyhedra, static views of conic sections and the Solar System, a 3D surface plotter, a fountain of sparks, a swarming behavior model, a random walk example, a whirlpool effect using gravity and drag, and an example of chaos theory and sensitivity to initial conditions.
Q Engine is a cross-platform development system for games and interactive 3D applications. Its design strengths include built-in streaming, outstanding visual quality, and high-productivity development tools for deployment on Sony PlayStation 2, Microsoft Xbox, Linux, and Microsoft Windows.
Range Software is software for finite element analysis (FEA) in engineering simulations. Its main features are support for Computational Fluid Dynamics (CFD), heat transfer and radiation, linear stress-strain, electro-statics, acoustics, ground water flow, shape optimization, 3D mesh generation, an intuitive GUI, and import and export functionality. The Range Software package contains several tools which helps the user to setup, solve, and analyze the engineering problem.
STPsim is an application that simulates and visualizes switches using the Spanning Tree Protocol. It features a GUI to build and control a custom network topology. A VPython frontend visualizes virtual switches and network cables in a 3D environment. To visualize STP-states, switches and ports change colors and captions in real time.