A neat little helper application that allows you to set up new models, modify existing model settings, calibrate transmitter input sources, simulate transmitter actions, facilitate firmware updates, and generally make OpenTx easily accessible with your computer. OpenTx Companion mirrors the screens in the Taranis but in a more intuitive graphical interface.  It’s entirely possible to do the things in OpenTX Companion that can be done in OpenTX.  It can be downloaded from: OpenTX Companion Releases.