Thunkable - Powerful but easy to use, drag-and-drop mobile app builder.
TeamViewer - TeamViewer lets you establish a connection to any PC or server within just a few seconds.
Xamarin.Android - Integrated environment for building not only native Android but iOS and Windows apps too.
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.
Kodular - Much more than a modern app creator without coding
join.me - Instant screen sharing. Instant Aha!