Virt Viewer provides a graphical viewer for the guest OS. Supports guest OS VNC/SPICE
VDI client for Proxmox VE — SPICE and RDP remote console launcher
Launching SPICE remote-viewer for Proxmox VE
Terminal/ssh/sftp/ftp/telnet/serialport/RDP/VNC/Spice client(linux, mac, win)
Spice is a statically-typed, easy to use and compiled programming language. It supports cross-compilation and is especially useful for programming close to the system.