While the US Congress is consumed by the online piracy battle, an arguably more important fight over the future of the Internet is quietly unfolding abroad.
The DBacesslayer aka DBSlayer aka Släyer is a lightweight database abstraction layer suitable for high-load websites where you need the scalable advantages of connection pooling. Written in C for speed, DBSlayer talks to clients via JSON over HTTP
Open-source server applications packaged as self-contained Linux software appliances. Selection includes many development frameworks, webapps, and content management systems. Packages are available as virtual machine images or ISO disc images, allowing for implementation using software-as-a-service, a local virtual machines, or hardware installation.
A free (libre), open-source (GNU GPL), content management platform designed for group collaboration. Open Atrium is based on Drupal (running on Apache, with a MySQL database).