/usr/bin/gnunet-conversation-gtk
/usr/bin/gnunet-fs-gtk
/usr/bin/gnunet-gtk
/usr/bin/gnunet-identity-gtk
/usr/bin/gnunet-namestore-gtk
/usr/bin/gnunet-peerinfo-gtk
/usr/bin/gnunet-setup
/usr/bin/gnunet-statistics-gtk
You may install this package on Debian with
apt-get
install gnunet-gtk