libfive is a software library and set of tools for solid modeling, especially suited for parametric and procedural design. It is infrastructure for generative design, mass customization, and domain-specific CAD tools.
a game programming library for C/C++ developers distributed freely, supporting the following platforms: DOS, Unix (Linux, FreeBSD, Irix, Solaris, Darwin), Windows, QNX, BeOS and MacOS X. It provides many functions for graphics, sounds, player input, etc..
a library for collision detection of three-dimensional objects undergoing rigid motion and deformation. SOLID is designed to be used in interactive 3D graphics applications
open source high performance realtime 3D engine written and usable in C++ and also available for .NET languages. It is completely cross-platform, using D3D, OpenGL and its own software renderer.
(pronounced "fulltick") is a cross-platform C++ GUI toolkit for UNIX®/Linux® (X11), Microsoft® Windows®, and MacOS® X. FLTK provides modern GUI functionality without the bloat and supports 3D graphics via OpenGL® and its built-in GLUT emulation.
a 3D engine: a library of subroutines for 3D rendering and game development. The library is C++ with a set of Python bindings. Game development with Panda3D usually consists of writing a Python program that controls the the Panda3D library.
library that constitutes a powerful API for handling operating system specific tasks, such as opening an OpenGL window and reading keyboard, mouse and joystick input.
Free 3D Collision Detection Library an effort to provide a free collision detection library for generic polyhedra. Its purpose is mainly for 3D games where accurate detection is needed between two non-simple objects.
designed to make multimedia productions (games, screen-savers, demos..) easier and more intuitive to write. Consequences are a complete abstraction of resources management (fonts, images, 3D meshes, files, zip-archives, sounds..) and rendering operations