GKrellM xkb is a plugin for GKrellM that displays a small country flag indicating the currently-active national keyboard layout and two small CapsLock/NumLock indicators. It also has a popup menu to switch between the keyboard layouts. It requires GKrellM2 and the XKB X Window extension.
The wmctrl program is a command line tool to interact with an EWMH/NetWM-compatible X Window Manager. It provides command line access to almost all the features defined in the EWMH specification. It's possible to, for example, obtain information about the window manager, get a detailed list of desktops and managed windows, switch and resize desktops, change the number of desktops, make windows full-screen, always-above, or sticky, and activate, close, move, resize, maximize, and minimize them. The command line access makes it easy to automate these tasks and execute them from any application that is able to run a command in response to some event.
GKrellM trayicons is a plugin for GKrellM that displays user-defined, automatically scaled icons. The icons may be used either for notification or as application launchers. The plugin serves a similar purpose to the system tray in Windows. The notification functionality has been designed to facilitate easy integration into shell scripts and existing applications.
Cysphere is an integrated social networking server for smaller virtual communities. It provides a private mailbox, public and private discussion forums, and simple file sharing, and makes it as simple as possible for users to communicate over the Web in a secure way. It includes an embedded Web server and SQL database and requires no installation or maintenance.