RetroArch - RetroArch is a frontend for emulators, game engines and media players.
TeamViewer - TeamViewer lets you establish a connection to any PC or server within just a few seconds.
mGBA - mGBA is an open source emulator of the Game Boy Advance. The goals are speed and accuracy.
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.
DeSmuME - DeSmuME is a freeware emulator for the NDS roms & Nintendo DS Lite games created by YopYop156.
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.