The best 75% virtual keyboard, period!
This is a keyboard layout that combines both the NUMPAD and the benefits of a compact layout in one keyboard. I can't wait for this keyboard to become a physical reality.
Directions for use:
Just put the css, js folders and index.html in the same directory and run it on any touchscreen device.
Layout: http://www.keyboard-layout-editor.com Code tweaked from: https://code.tutsplus.com/tutorials/creating-a-keyboard-with-css-and-jquery--net-5774
Initial choice: https://codepen.io/attilahajzer/pen/kydqJ
Also, you can find additional layouts ANSI/ISO in the layouts folder.