Android is now open source software. Google open the entire source code including network and telephony stacks that were not available previously under a Apache license.
OpenGL (Open Graphics Library) is a standard specification defining a cross-language cross-platform API for writing applications that produce 2D and 3D computer graphics. The interface consists of over 250 different function calls which can be used to draw complex three-dimensional scenes from simple primitives. OpenGL was developed by Silicon Graphics Inc. (SGI) in 1992 and is widely used in CAD, virtual reality, scientific visualization, information visualization, and flight simulation
A student at UC Davis has created some stunning visualizations of open source software contributions, including Eclipse, Python, Apache httpd and Postgres.
Back in the 1980s, when Richard Stallman was the only one talking about the need for “free software,” no one quite knew what he was talking about.