gnunet-gtk 0.16.0-6 (s390x binary) in ubuntu lunar

 GNUnet is a framework for secure peer-to-peer networking that does not use any
 centralized or otherwise trusted services. Its high-level goal is to provide a
 strong free software foundation for a global network that provides security
 and in particular respects privacy.
 .
 This package contains the graphical client, using the GTK+ toolkit. In order
 use GNUnet, you also need gnunet either on your server or on your local
 machine.