The Chemistry Development Kit (CDK) is a library of Java classes for chemo-, bioinformatics, computational chemistry, and chemometrics. It provides important algorithms like substructure search, SMILES, Gasteiger charges, QSAR descriptor calculation, 3D structure generation, 2D layout and rendering, many IO formats, atom typing, and more.
In Warzone 2100, you command the forces of "The Project" in a battle to rebuild the world after mankind has almost been destroyed by nuclear missiles. The game offers campaign, tutorial, multi-player, and single-player skirmish modes. An extensive tech tree with over 400 different technologies, combined with the unit design system, allows for a wide variety of possible units and tactics.
Config4*, pronounced "config for star", is a family of configuration-file parsers. It currently provides C++ and Java implementations. It offers an incredibly flexible and user-friendly syntax and an API with powerful features not available in other configuration technologies such as XML, JSON, Java properties, or the Windows Registry. The comprehensive and easy-to-read documentation includes a getting started guide, expert tips, API reference manuals, and a maintenance guide.
PascalSCADA is a framework for Delphi and Lazarus to quick development of HMI/SCADA applications. The platforms supported by PascalSCADA are Windows, Linux, and FreeBSD under 32 and 64 bits (FreeBSD only in 32 bits). You can communicate with CLP's, create interfaces, store values and alarms of process, and control users of the application.
GLoid is a 3D block game inspired by Arkanoid. It was originally written as an SDL and OpenGL exercise, but has developed into a full-featured, highly playable game with refined graphics and sound effects. It runs equally well on Windows, Linux, and Mac OS X, and has minimal hardware requirements.
Easy Funktion is 2D function plotter software with an equation solver. It has an office-like GUI frontend and features a built-in pocket calculator, calculating with complex numbers (with special extensions for electronics, e.g. capacitor/inductor impedance), a function to export to spreadsheet software, and an advanced formula editor with automatic formatting.
LampCMS is a Q&A Web site with best features of StackOverflow and Quora mashed together. It integrates with Twitter, Facebook, Tumblr, and the Blogger API, and can post questions and answers to all of these APIs. It is very fast and can handle millions of monthly visitors on a single inexpensive server.