@Frank_Herrmann recently pointed my attention to another variant of the CNC control software - cnc.js. It supports grbl, TinyG and Smoothie and has some nice features, where my favorite one after giving it a quick try is the ‘cnc pendant operations to keyboard’ mapping, which allows easy configuration of the PS3 controller as a CNC pendant. Building this feature into Chilipeppr would be awesome enhancement.
https://youtu.be/wrQ1q-pWM14
I have been giving it a try works well and nice for offline operation