Mesa 3D is a collection of graphics libraries and drivers that implement hardware-accelerated OpenGL 3. It comes with its own software emulation fallback driver though. Besides OpenGL and OpenGL ES, it implements OpenVG and EGL, but also allows for Direct3D interfaces.
view3dscene is a lightweight browser for X3D and VRML 3D models, and a viewer for various other 3D model formats (3DS, MD3, Wavefront OBJ, and Collada, Spine JSON). It supports viewing the scene in the "Examine" mode and walking in the virtual world with features such as collision detection and gravity. Rendering is done using OpenGL. Many advanced 3D graphic effects are available, like mirrors (flat and through cube environment mapping), shadows (shadow maps and shadow volumes), GLSL shaders an
Cross-platform 3D and 2D game engine for Object Pascal. Extensible system of 3D objects, with out-of-the-box levels, items, intelligent creatures and more. Rendering and processing of 3D models in X3D, VRML, Collada and other formats. Latest graphic effects including shadows, shaders, mirrors, screen effects. Animation, collision detection, 3D sound.
OpenCSG is a library that does image-based CSG rendering using OpenGL. CSG is short for "constructive solid geometry" and represents a modeling technique for composing shapes with 3D-primitives which are combined using volumetric boolean operations. Image-based CSG rendering means rendering CSG shapes without calculating their surface in object-space. Instead, the image of a CSG shape is composed directly in the frame-buffer of the graphics hardware by rather sophisticated stenciling and z-buff
Galaxy Forces V2 is a classic 2D side-scrolling game inspired by Gravity Forces on Amiga. It allows up to 8 players, involves shooting enemy space ships and either transporting cargo, point races against opponents, or shoot-everything scoring. There are 50 official levels and a map editor, and it runs on Linux, Windows and Mac.
Nux is a OpenGL-based widget toolkit, with some functional resemblence to Gtk+. It's developed and used by Ubuntus Unity. It's comprised of three libraries: NuxCore for types/math/color/urility functions, NuxGraphics abstracts the rendering and canvas interaction, and Nux itself providing the widgets atop.
Functy is a 3D graphics generation tool. It plots cartesian, spherical or parametric curve functions. It allows altering their parameters for immediate redraws to explore 3D function results. It utilized GPU functions entirely for visualization.
A planetarium software that renders a 3D simulation of the night sky. It can show star constellations, planets and nebulaes. It includes a catalogue of over 600000 objects.
Dgame is a 2D framework which is based on the SDL and OpenGL, but intended for the D programming language. Its overall design is based on Pygame and took further inspiration from SFML for C++. It provides an easy API for window management, implementing a main game loop with event handling and termination, framerate control, font loading, sprites, tile and image control, shape drawing, audio support, and OpenGL configuration.
Red Eclipse is a first person arena shooter, suitable for casual gaming. It's built on Cube Engine 2 and runs on all major platforms. It has a few built-in game modes, adaptable settings, comes with a level editor, and lots of community-maintained modifications or patchsets.
UltraGrid is a software for video transmission over networks in high quality but with low latency (as low as 83ms). It allows high-definition streams (PAL/NTSC, HD, 2K, 2160p, iHDTV, QuadHD, SuperHD, 4K video). It supports SAGE, OpenGL and SDL displays, DXT-compression per GLSL, JPEG compression via CUDA, permits to utilize HDMI and HD-SDI cards, system audio or JACK sinks, and even provides 3D support.
AGK is a easy to learn and embed C++ toolkit for writing games. It utilizes Boost, provides many API classes and functions, 3D sound features, integration with screen readers (like JAWS) or eSpeak synthesizer or MS Speech API, NVDA, Window Eyes, system access, INI-style configuration, console I/O, an ready to use game menu, OpenGL and built-in window management, hashing functions, number conversion, and a custom memory manager, and an interpreter for AngelScript.
Attract-Mode is a GUI for game system emulators such as MAME, MESS and Nestopia. It abstracts the operating system, can be navigated per joystick, gamepad and spin dial. It's thus suitable for cabinet installations, works on Linux, OS X and Windows; is scriptable per Squirrel, provides a configurable menu, screensaver and background music, has a convenient history and play or score statistics.
Mundo is a 3D massive-multiplayer online role playing game, with basic graphics. It's multi-platform, based on GPLDevKit and OpenGL and written in FreePascal. The current map provides 1 million square meters, including caves and hell-style scenes, 17 non-player characters, 21 monster types, 58 items, and around 100 quests.
Unvanquished is a first person shooter with elements for realtime-strategy games. It's derived from Tremulous, and adapted to the Deamon-Engine. It pitches adaptable aliens against technologically advanced humans, with either team being playable. Humans get credit for new weaponry, whereas aliens get an evolution score to progress.
Spacescape creates seamless star/space and nebula background images. It's built on Qt and Ogre3D for rendering.
Tcl3D provides OpenGL bindings for TCL scripts. It's a SWIG-generated wrapper for 3D rendering using OpenGL, or alternatively SDL, OpenSceneGraph, Open Dynamics Engine or Nvidia Cg. It provides custom extensions like gauge drawing and various utility functions on top.