Remote Mouse - Turn your smartphone into a wireless touchpad and keyboard now!
IINA - The modern video player for macOS
KDE Connect - Integrate Android with the KDE Desktop
Cabin - Family App - A family app that lets you share, plan & stay connected.
Monect - Make the best use of sensors on smart device to control PC, simulate steering wheel, game-pad...
AppMockUp - Create the most compelling screenshots for your app.