Fnord is a mathematical visualization system. It provides a purely functional, collection-oriented language with symbolic differentiation and optimization. You can type in a parametric equation and see the resulting curve and/or surface. You can attach GUI widgets to parameters, change their values in real time, etc.
Motorsport is a project with a clear goal: to create the most realistic vehicle simulation possible. This includes cars and trucks, which can be driven using common input devices such as keyboards and steering wheels. It limits realism to what the hardware, and is intended for hardcore driving simulator fans. This means that it will try to have realistic physics, but not necessarily 'playable', 'easy', or 'fun' physics - these characteristics will depend on which vehicle is driven and on what a person is trying to drive it.
WEBWEAVR-III is a research toolkit that supports the construction of Bayesian networks, inference in standard and dynamic Bayesian networks and decomposable Markov networks, the construction and verification of multiply sectioned Bayesian networks (MSBNs), inference in multi-agent MSBNs, and learning decomposable Markov networks.
MpNT is a multi-precision number theory library that provides a base for building cryptographic applications. It may also be used in any other domain where efficient large number computations are required. The library supports integer, modular, and floating point arithmetic with practically unlimited precision. It is both speed efficient and highly portable without disregarding code structure and clarity.
OpenCalculator is a Java-based calculator program. It can calculate mathematical expressions. It has a module system that makes it very easy to add your own functions. Other features are a graph painter and a tiny programming language designed to make it easy to write small mathematical tools.