Cross-platform GNUstep apps

Screenshot of GNUMail.app showing the famous mail of its creator, Ludovic Marcotte

Going to list and link great cross platform GNUstep apps here. If you install them from the repo please bear in mind you'll get a development version, which currently might be unfinished or unstable.

Adresses.app – pacman -S addresses.app-ngr
FisicaLab.app – pacman -S fisicalab.app-ngr
Grr.app – Günther's RSS Reader – pacman -S grr.app-ngr
GNUMail.app – pacman -S gnumail.app-ngr
TimeTracker.app – pacman -S timetracker.app-ngr

Point me at yours and I'll make it available via the repo and list it here.