X2Go is described as 'open source remote desktop software for Linux that uses the NX technology protocol' and is a popular app in the OS & Utilities category. There are more than 25 alternatives to X2Go for a variety of platforms, including Windows, Linux, Mac, Android and iPhone. The best alternative is TeamViewer. It's not free, so if you're looking for a free alternative, you could try Chrome Remote Desktop or DWService. Other great apps like X2Go are NoMachine (Freemium), MeshCentral (Free, Open Source), UltraViewer (Free Personal) and Remotely (Free, Open Source).
RemoteView is a service that lets you remotely access your computers and mobile devices through your internet connection, regardless of time and place. All you need to do is install the agent on your remote computers, Android devices, and servers.
The SPICE project aims to provide a complete open source solution for remote access to virtual machines in a seamless way so you can play videos, record audio, share usb devices and share folders without complications.
Control your Windows desktop, show presentations and access files from your personal computer with your Android mobile device or from another PC computer. All in lag-less performance and up to 4K quality.
RDPRemote is a tool that allows to connect to any Windows computer, from anywhere using RDP or VNC protocols. RDPRemote uses Windows Remote Desktop Connection (mstsc.exe) or a standard VNC client/server application such as TightVNC/UltraVNC.