The Gravity Recovery Object Oriented Programming System (GROOPS) is a software toolkit written in C++ that enables the user to perform core geodetic tasks. Key features of the software include gravity field recovery from satellite and terrestrial data, the determination of satellite orbits from global navigation satellite system (GNSS) measurements, and the processing of GNSS constellations and ground station networks.

The Gravity Recovery Object Oriented Programming System (GROOPS) is a software toolkit written in C++ that enables the user to perform core geodetic tasks. Key features of the software include gravity field recovery from satellite and terrestrial data, the determination of satellite orbits from global navigation satellite system (GNSS) measurements, and the processing of GNSS constellations and ground station networks.

Faust is a functional programming language specifically designed for realtime audio applications and plugins. The syntax of the language is block diagram oriented. The faust compiler translate signal processing specifications into optimized C++ code for signal processing applications.

fcft is a small font loading and glyph rasterization library built on-top of FontConfig, FreeType2 and pixman.

flatzebra is a simple generic C++ game engine library supporting 2D double-buffering.

OpenJDK is a development environment for building applications, applets, and components using the Java programming language.