synaptiks is a KDE touchpad tool consisting of a system settings module for touchpad configuration and a tray application for touchpad management. The system settings module allows you to configure basic as well as advanced touchpad settings. The tray application can switch your touchpad on or off, either manually using a global shortcut, or automatically, if external mice are plugged or while the keyboard is active.
wumwum is a window manager manager. The idea behind wumwum is to turn any EWMH-compliant window manager into a tiling manager a la "ion" or "awesome". wumwum works by using wmctrl, and adapts itself dynamically to the active window manager. All functionality from the underlying window manager is kept when under wumwum, making it ideal for beginners.
x11vis is a visual and interactive tool for debugging X11 clients. Unlike other tools such as xtrace, it displays human readable IDs on all requests, no matter at which point in time the information becomes available. To help you cope with large amounts of data, it displays only the most important information by default, automatically folds sequences of boring requests, allows you to filter by packet type or client, and provides markers for navigation. Instead of assigning a number to each connection, it displays the command line with which that client was started.
x9wm is a clone or fork of the 9wm and w9wm X window managers. It is a light alternative for the Mac OS X desktop. All of its source code is contained in a single file. It supports an alterate red colored cursor. It is very light on resources, quite fast, very simple, and easy for long programming, editing, or Web work sessions. You can blend it with Nitrogen and Wbar to create a simple but elegant interface without iconic or stylistic clutter. It does not decorate windows with borders, and it is modal, controlled with the mouse.
xgrk provides the possibility to change keyboard mapping with alt-shift or meta-shift combinations or by clicking on the flag image. You will be able to write greek in X programs like netscape or xedit. Keycodes are auto-loaded on startup so it should work with all unices and keyboard layouts. Fonts are not included.