Maybe a Gnome shell like dashboard for Xfce
Easily themable notification daemon with transparency effects
Autoconf macros and scripts to augment app build systems
Notes plugin for the Xfce Panel
Modifications on top of FluxBB for Xfce
Home of docs.xfce.org and wiki.xfce.org. Modifications for dokuwiki
Calendar for Xfce
Release manager web application used for Xfce