TerraLib is a GIS classes and functions library, allowing a collaborative environment and its use for the development of multiple GIS tools. Its main aim is to enable the development of a new generation of GIS applications, based on the technological advances on spatial databases.

52North is a Java based implementation of web services and data encodings provided by the Open Geospatial Consortium, OGC. It mainly addresses Services for Geosensors, security and web processing.

Celestia :: the free space simulation that lets you explore our universe in three dimensions. Celestia runs on Windows, Linux, and Mac OS X.

openuniverse :: it's a piece of software, simulating the Solar System's bodies in 3D on your Windows or Linux PC (will work in most *NIX's as well). In difference to quite a few other programs it does so in realtime. Meaning you can view all the planets, moons and spaceships move along their paths, trace them, follow them, orbit them and even control them (time and spaceship contol).

Stellarium is planetarium software that shows exactly what you see when you look up at the stars. It's easy to use, and free.

Walnut is an OpenSource framework for the development of neural network simulations by both beginners and experts. It is a system that is extensible with new paradigms. Neural network architectures and simulations are portable between various platforms (notably Windows and Unix).

When the Open Universiteit Nederland (OUNL) released the 2.2 version of CopperCore it was world’s first open source IMS Learning Design Engine that supported all three levels of IMS Learning Design (A, B and C).
Handling the Business Logic of Learning Design
IMS Learning Design is a complex, semantically rich specification, so it is not trivial to provide full support for it. IMS Learning Design specifies a template of a synchronized and personalized workflow through a course. In the runtime environment you must use this template to provide a user with an up-to-date view on his or her learning process. So for example when LD specifies a group assignment where all learners need to complete a specific activity before they can proceed to the next activity, the runtime environment should check this constraint and it should synchronize access to the second activity by continuously checking to see if all users did already complete their first activity. All this checking, synchronizing and personalizing is called the business logic of Learning Design, and this is exactly what CopperCore handles for the developer. By implementing this business logic CopperCore hides the developers from these complexities when incorporating the IMS Learning Design specification. Check for information on how to apply IMS-LD in education the UNFOLD project which is supporting Communities of Practice.

Gwyddion is a modular program for SPM (scanning probe microscopy) data visualization and analysis. Primarily it is intended for analysis of height fields obtained by means of scanning probe microscopy techniques (AFM, MFM, STM, SNOM/NSOM), however it can be generally used for any other height field and image analysis.

Virtual Atlas of the Moon :: this software can visualize the Moon aspect for every date and hour. It permits also to study lunar formations with unique databse and pictures library.