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.
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.
PAUS is a system for controlling stuff with simple event-based Perl scripts. It can be used for controlling your house, creating an alert system, or making a remote controlled mp3 player. It is a flexible project that "merges" other I/O projects together, such as lirc (remote control), lcdproc (LCD output), mpg123 (mp3 player), and various I/O boards (such as the K8000). It's modular, extensible, multi-threaded, and has networking support.
x10dev provides a /dev interface to an X10 network through a combination of Linux kernel modules and daemons. It is intended to provide a standard interface and syntax to shell script utilities (such as cat and echo), Perl scripts, C programs, or Java programs so that everything from a quick hack to a more advanced program can manipulate the X10 devices in an automated home regardless of the transceiver used. Its simplest use is with shell scripts (examples of which are provided in the package). Currently the project supports the 3 X10 transceivers (PowerLinc Serial, PowerLinc USB, and CM11A).
This Java Client demonstrates the simplicity of creating a remote control Web-based client/server for home automation control with the WiSH x10dev drivers. The package includes a socket server which runs on the same machine as the x10dev drivers. Java clients are provided which emulate the SmartHome PowerSynnapse tool, emulate the HomeControl GUI, and create a new graphical tool for using a SmartHome Templinc.
Thinux is a thin-client server on a live CD. It boots a network of diskless computers to automatically start an application such as a Web browser. Each thin client machine acts as a cluster node to share its processing and memory resources with each other to take the load off the server. It is a turnkey solution that does not change nor rely on your existing systems to run. By booting from a removable CD, it does not lock-in the user so it is convenient to test. It is ideal for any organizations that require large deployment of software automatically and cost effectively.
OWFS (One Wire Filesystem) allows easy control of the 1-Wire bus under Linux. The bus can either be viewed in a Web browser (OWHTTPD) or as files (OWFS). This makes manipulating the 1-wire devices easy with shell scripts, Perl, C, and other programming languages. 1-Wire devices are intriguing chips made by Dallas Semi. They are cheap, uniquely numbered, and take minimal wiring to connect (a data/power line and ground are all that's required. Chip functions include memory, switches, counters, and sensors of temperature and voltage.