FlightGear Flight Simulator: free open-source multiplatform flight sim
3D Engine c++
Open and edit the archive files used in over 4200 games.
X3D is the open-standard format for 3D graphics scenes on the Web.
A real-time 3D Engine written in Ada
Cross-platform real-time strategy game (3D)
Extensible Line-drawing & Polygon-filling Rasterization Libs for Java
A fun realistic multiplayer free-and-open-source first-person-shooter!
A planetarium software that shows a 3D simulation of the night sky
Highly realistic and immersive model for Flightgear.
3D urban environment renderer : browser-app ; as well as a GTA clone
3D .NET engine for Windows, Linux, Mac
realtime 3d surface rendering library
a very lightweight advanced terrain-rendering and 3D map rendering sys
Design and Display Happy Cube solutions
extreme 3D flight simulator with advanced terrain rendering
A cross-platform, 3D interpreter to play LucasArts' Lua-based games