bluelock.pl is designed to lock a display or terminal once a Bluetooth device (like a cell phone) is out of range. The script queries the RSSI (signal strength) of a Bluetooth device. Once the RSSI passes above a certain threshold a timer is started, and once the timer expires a locking program is run.
drun is a GTK run dialog box with tab completion and a simple UI. It supports common features as well as history, files, directories, URLs, and spelling correction. It was designed to be simple and fast, and be easy to use with keyboard input. It can be run with directory and file parameters to support integration with Nautilus and Thunar selections. It keeps a history of run commands to give ordered completions including parameters. It has configurable URL and directory handlers, and recursive tab completion.
Wally is a Qt4 wallpaper changer using multiple sources like files, folders, FTP remote folders, Flickr, Yahoo!, Panoramio, Ipernity, Photobucket, Buzznet, Picasa, Smugmug, Google, Vladstudio, and deviantART images. It is available in many languages. Supported Linux window managers are GNOME, GnomeShell, KDE3, KDE4, XFCE4, BlackBox, FluxBox, Window Maker, and FVWM (experimental).