Brosim

Multiplayer line-of-sight RC flying
Quad
acro / angle
Plane
fixed wing
Heli
normal collective
Heli 3D
bipolar / inverted
TX16: set USB mode to Joystick when plugging in, then open the Controls panel in-game to map channels. Keyboard works too: WS throttle, AD yaw, arrows roll/pitch.

Credits

Thank you to Team Josh and Dave.