TeamViewer - TeamViewer lets you establish a connection to any PC or server within just a few seconds.
mRemoteNG - mRemoteNG is a fork of mRemote, an open source, tabbed, multi-protocol, remote connections manager.
AnyDesk - AnyDesk is the world's most comfortable remote desktop application. Access all your programs, documents and files from anywhere, without having to entrust your data to a cloud service.
join.me - Instant screen sharing. Instant Aha!
ConnectWise Control - ConnectWise Control is a mobile app that allows you to instantly connect with another system from anywhere with a connection to the internet. The software not only comes in a mobile app, but it has a desktop version as well for complete coverage.
Chrome Remote Desktop - The easy way to remotely connect with your home or work computer, or share your screen with others.