Packages with the xrender use flag

sci-electronics / pcb : GPL Electronic Design Automation: Printed Circuit Board editor

  • Translucent PCB display for Motif/Lesstif GUI

x11-misc / fbpager : A Pager for fluxbox

  • Enable transparency support via x11-libs/libXrender

x11-wm / e16 : Enlightenment Window Manager (E16)