xsysguard is a resource-friendly system monitor based on Imlib2. The main features include a powerful configuration file format, full alpha channel support, configurable widgets, and many data sources implemented as modules. For example, the daemon module allows you to monitor remote machines, and the file module can parse files with scanf or regular expressions.
Xurgency is a terminal/console application for the Gnome Desktop to inform the user by flashing the taskbar if a process like emerge, make, wget, or updatedb is ready. For your convenience, ready-made 'Emerge', 'Make', 'Wget', and 'Updatedb' scripts are provided, but it will work with all console programs.