RPort is described as 'all-in-one remote management suite. It manages Windows, Linux, desktops and servers, and any IoT device from one central console' and is a Remote Desktop App in the Network & Admin category. There are more than 10 alternatives to RPort for a variety of platforms, including Windows, Mac, Linux, Android and iPhone. The best alternative is TeamViewer. It's not free, so if you're looking for a free alternative, you could try Remmina or DWService. Other great apps like RPort are AnyDesk (Free Personal), UltraVNC (Free, Open Source), TightVNC (Free, Open Source) and VNC Connect (Freemium).
Remmina is a remote desktop client written in GTK+. Remmina primarily targets system administrators and travelers that need to work with computers remotely in front of either large monitors or tiny netbooks.
DWService is an open source project which offers a service that allows access to remote systems (Windows, Mac, Linux, Raspberry...) using a standard web browser - without any component required on the client side.
UltraVNC is easy to use and free software that can display the screen of another computer (via the Internet or a local network) on your own screen. The program allows you to use your mouse and keyboard to control the other computer remotely.
TightVNC is a free remote control software package. With TightVNC, you can see the desktop of a remote machine and control it with your local mouse and keyboard, just like you would do it sitting in the front of that computer.
VNC is remote access and control software which allows you to view and fully interact with one computer desktop (the "VNC Connect") using a simple program (the "VNC viewer") on another computer desktop or mobile device anywhere on the Internet.
LogMeIn gives you fast, easy remote access to your PC or Mac from your browser, desktop and mobile devices. Premium features like file transfer, file sharing and remote printing help you stay connected and productive wherever you go.