TeamViewer - TeamViewer lets you establish a connection to any PC or server within just a few seconds.
Google Drive - Access and sync your files anywhere
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.
Dropbox - Online Sync and File Sharing
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.
ShareFile - Secure file sharing and sync