Jmol is a Free, Open Source molecule viewer and editor. It is a collaboratively developed visualization and measurement tool for chemical scientists. Jmol is an active project, and there are new features being added to it on a daily basis. Users are encouraged to modify it to fit their needs and to contribute their changes to the project.
Signs is a development environment for hardware designs in various hardware description languages. The tackled tasks are compilation, synthesis, simulation, and testing of designs. Due to the integration of these main areas, it provides the ability to debug designs in an all-embracing manner by switching between source code, netlist, and simulation. Supported languages include VHDL and the ISCAS benchmark format. Signs comes in two flavors: a command-line only version useful for processing and analyzing large netlists and as an Eclipse plugin for hardware design and simulation.
IMathAS (Internet Mathematics Assessment System) is a Web-based math testing and homework system. It is a light course/learning management system and testing system, similar to and inspired by WebWork and WIMS, and similar to textbook-bundled systems like iLrn and MathXL. It requires a browser with MathML and SVG support such as Firefox 1.5 or IE6 with plugins.
JAME is an application for creating fractals and other graphics artifacts. It is written in the Java language, with some native code to accelerate encoding of videos and images. It has a real-time, multi-threaded graphics engine with layers, filters, effects, a lot of formulas, and parameters. JAME supports operations such as continuous zoom of Mandelbrot and Julia sets, rotation, and color shifting. JAME has also advanced features such as networked computation and scripting. You can take photos of your fractals or record movies from your exploration paths. Photos and movies are stored in a database to be rendered in high resolution and exported to a file. JAME can be extended by plug-ins which provide fractals, formulas, filters, effects, and more.