Ghostscript is a processor for PostScript and PDF files. It can rasterize these files to a wide variety of printers, devices for screen preview, and image file formats. Since applications tend to prepare pages for printing in a high-level format such as PostScript, most Unix users with low-level bitmap printers, such as inkjets, use GhostScript as part of the printing process. In addition, Ghostscript is capable of converting PostScript files, functionality comparable to Adobe Acrobat Distiller, but on the command line. In addition, Ghostscript is used for file import and viewing by a great many other applications, including xv, ImageMagick, gimp, and xdvi. Several GUI wrappers for viewing PostScript and PDF files exist, including GSview, ghostview, gv, ggv, and kghostview. This is far from a comprehensive list.
GIMP is the GNU Image Manipulation Program. It is a freely distributed piece of software suitable for such tasks as photo retouching, image composition and image authoring. It can be used as a simple paint program, an expert quality photo retouching program, an online batch processing system, a mass production image renderer, a image format converter, etc.
Tic-tac-toe is an OpenGL game that focuses on graphical effects, specifically realistic 3D rendering of water. The water surface is procedurally generated, and the pieces float realistically on top of it. The water is textured, blended, and environment mapped. It is fully refracted and incorporates the Fresnel term for opacity.
The Noble Ape Simulation is a collection of a number of autonomous simulation components including a landscape simulation, biological simulation, weather simulation, sentient creature (Noble Ape) simulation, and a simple intelligent-agent scripting language (ApeScript). Noble Ape also contains a social simulation where the Noble Apes can be tracked in terms of social groups and also over many generations to explain social phenomenon to users looking to study this kind of interaction. It has been in development for more than a fifteen years.
fPic is a two-part project that aims at providing a replacement Picture class for command-line applications made with REALBasic. It is split into a dynamic library, manip.dylib, and an RB class, fPic. The dylib handles the heavy-lifting, while the fPic class provides a (more or less) seamless way for RB programmers to manipulate images in CLI applications.
Elmer is a computational tool for multi-physics problems that has been developed in collaboration with Finnish universities, research laboratories and industry. It includes physical models of fluid dynamics, structural mechanics, electromagnetics, and heat transfer. These are described by partial differential equations which are solved by the Finite Element Method (FEM). It comprises of several different parts. The geometry, boundary conditions and physical models are defined in ElmerFront. The resulting problem definition is solved by ElmerSolver. Results are the visualized by ElmerPost. An ElmerGrid utility may be used for simple mesh manipulation.
CryptEngine is a fast 3D engine for Java. It is based on OpenGL and provides components and objects allowing the description and rendering of 3D scenes. Unlike several other 3D engines, it focuses on rapid application development and makes it possible to create and render complex 3D scenes without having to learn OpenGL. A large collection of demos are included, demonstrating the many features and providing you with valuable design techniques and tricks. It also facilitates game design with a sound system, scripting, and networking.