The complete list, grouped by when you reach for it. Everything here ships today; what is still being built is named as such.
Overcut speaks one game-agnostic telemetry model, so nothing above changes when a simulator is added.
In build: Le Mans Ultimate, rFactor 2 and Assetto Corsa.
The essentials are free forever: live telemetry on any screen and lap analysis. The paid plan adds the extras.