spice-html5 0.1.7-4 (s390x binary) in ubuntu focal

 Spice Web client which runs entirely within a modern browser. It is limited
 in function, a bit slow, and lacks support for many features of Spice
 (audio, video, agents just to name a few).
 .
 The Simple Protocol for Independent Computing Environments (SPICE) is
 a remote display system built for virtual environments which allows
 you to view a computing 'desktop' environment not only on the machine
 where it is running, but from anywhere on the Internet and from a wide
 variety of machine architectures.