Xfce Embed Plugin enables the embedding of arbitrary application windows into the Xfce panel. The window is resized into the panel space available, and the associated program can be automatically launched if it is not open. Example uses include embedding an instant messaging buddy list, a mail client's new mail ticker, a simple media application, or a fancy clock or timer. Combining with Xfce's ability to auto-hide panels can make this very convenient.
Lilblue Linux is a Gentoo-based, security-enhanced, fully featured XFCE4 desktop system for amd64, built on uClibc. Its userland utilities are not provided by busybox, but by coreutils, util-Linux, etc. It resembles a common Linux system with one exception: It uses uClibc as its standard C library and not the more common glibc, and so brings in some of the advantages of embedded systems. Security enhancements come from Gentoo's hardened toolchain and Grsec/PaX-patched kernel. The fully-featured XFCE4 desktop has software for browsing, email, word processing, multimedia, chat, games, and more.