X-KeyPad 1.5.1

X-KeyPad is a plugin for  X-Plane 11 and 12 on Windows, OSX, and Linux that supports interfacing P.I. Engineering X-Keys devices to X-Plane. It also supports creating virtual keyboards that can operate on secondary monitors, touch screens, or tablets using Duet Display. It also supports the X-Touch Mini MIDI controller that features infinite rotary encoders as well as all the Elgato Stream Deck devices.

Read more here:

https://www.stickandrudderstudios.com/x-keypad-for-x-keys/