Gizmo Daemon is a program for controlling your computer based on events from input devices. It has built-in support for all Linux input devices, including keyboards with special keys, joysticks, remotes, dials, and more. It lets you control applications, launch programs, change the system volume, switch desktops, and directly control Amarok. It can visualize system events (such as Amarok sound output, CPU usage, etc.) on capable devices (keyboards with LEDs, Griffin PowerMate, etc.). It also features support for LIRC and RF based remote controls, allowing it to have per-application key mappings and configurable sensitivity settings.
Gemu is a Gnome application designed to configure sound cards based on the EMU10K1 platform from Creative Labs. Gemu is capable of adding, viewing and deleting audio routes, turning on Live Drive IR, turning on the 12db boost to the front/headphone jacks on Live cards, setting the S/PDIF frequency on Audigy cards, setting the recording source, turning on digital passthrough mode, setting to the analog or digital mode of the dual-mode jack of 5.1 cards, adding and seeing patches for sources and destinations, and controlling volume on a per-route basis or by source or destination.
i8krellm is a GKrellM plugin to control the fans on Dell Inspiron/Latitude notebook computers. It requires the Linux kernel module and i8kutils package found at http://www.debian.org/~dz/i8k/. It displays the current CPU temperature, mode indicator, and two animated fans. Temperature triggers can be set to cycle the fans off, low, or high speed.
Logiclic is a home automation solution. It has just a little kernel (Servlet in Java), and you can add a Manager to this kernel and access it via a Web browser. The manager can exchange services like Tini management, I2C driver, X10 Driver, Switcher Manager, Thermometer, LCD control, etc. With this modular part, you can make your own solution of home automation. It features a neuronal manager and a scripting manager. Documentation is in French.
GFreqlet is a GNOME applet for Linux that not only monitors CPU frequency scaling, but also allows the end user to change the frequency or governor with just a click. It automatically detects which frequencies and governors your processor supports, so there is no configuration required. The applet itself is not run as root, nor required to modify to run with root ownership, but password prompts with gksudo if a superuser action is required. GFreqlet is very straightforward and minimal, and just does what it's supposed to.