Remmina is a remote desktop software client for POSIX-based computer operating systems. It supports the RDP, VNC, NX, XDMCP, SPICE and SSH protocols.
License: Open Source
UltraVNC excels in file transfer capabilities and is particularly suited for users needing a customizable remote desktop experience. In contrast, Remmina offers multi-protocol support and a user-friendly interface, making it ideal for users who need to connect to various remote desktop environments with ease.