Naev is a 2D space trading and combat game, in a similar vein as Escape Velocity. Naev is played from a top-down perspective, featuring fast-paced combat, many ships, a large variety of equipment, and a large galaxy to explore. The game is highly open-ended, letting you proceed at your own pace.
QuantComponents is a framework for financial time-series analysis and algorithmic trading, based on Java and OSGi, with an Eclipse front-end. It is highly modular: usable as a plain Java API, OSGi components, or integrated into Eclipse. It works standalone or with a client-server architecture, depending on performance and reliability needs, and is integrated with Interactive Brokers through the IB Java API. Its generic broker API means that it can easily be extended to work with other brokers. A backtesting facility and an extensible SWT charting library are provided.
Libtrading is a C library for trading securities, foreign exchange, and financial derivatives electronically. It implements market data, order entry, drop copy, and related communications protocols used by exchanges and alternative trading venues across the world. The library is designed for high performance and robustness. Although latency is very important in trading today's markets, achieving it it must not jeopardize trading reliability.