DirectFB is a thin library that provides developers with hardware graphics acceleration, input device handling and abstraction, an integrated windowing system with support for translucent windows and multiple display layers on top of the Linux framebuffer device. It is a complete hardware abstraction layer with software fallbacks for every graphics operation that is not supported by the underlying hardware.
Project Utgard is a sub-project of the openSCADA project. It's focused on creating a completely Java and open source OPC interface for the openSCADA project. In order to create clean interfaces between both worlds, a separate project was created which only covers OPC specific functionality which can also be used outside openSCADA to create OPC software.
Device::ParallelPort is a Perl API that allows low level access to the parallel port of most computers. It does this by using a number of drivers, which can be customized and added to, including Linux (direct and parport), Win32, Script, Dummy, and more. It also contains a number of direct access devices including an example printer and a relay controller card.
YASP is a simple and open protocol for building networks with small microcontrollers. It is designed to have a small footprint for easy implementation with minimal hardware resources, but without sacrifice advanced features and future growth. The protocol scalability is implemented using variable length fields. The physical layer use the NRZ encoding as in RS-232, but using dominant and recessive bus states to provide a reliable way to detect collisions.
The DisGUISE C# library provides easy and object-oriented access to the advanced features of the AT command interface available in Sony Ericsson cellphones. This includes basic tasks like querying the phone book or getting a notice on incoming or outgoing calls, as well as creating and handling advanced GUI elements. The phone, connected via Bluetooth to the computer, thus can become an additional user interface element.