Screencast Keys for Blender 2.80+
How to Use:
* In the 3D View, hit Shift+Alt+C. Or press the Start Display button under Screencast Keys in N panel.
* The keys you press will appear by default in the lower-left corner of the 3D View
Options:
* Start Display: Activates/deactivates display of keys events.
* Size: Adjust the size for the text or mouse icon.
* Position: Move the horizontal and vertical margin relative to the 3D View.
* Text / Icon Color: Set the color for both the text and mouse icon.
* Fade Out Time: How much time it takes for the text to disappear.
* Display Mouse
** Icon: Show the mouse as an icon (default)
** Left / Right: Position the mouse icon.
** Text: Display mouse events as text.
** No Mouse: Don't display mouse events.
* Display Box
** Box Color: Set the color and alpha for the background box.
** Hide: Only show the box when a key was pressed, otherwise hide it.
** Box Width: Set the minimum size for the box (it resizes automatically if text doesn't fit)
* Display Last Operator
** The last used operator (tool) is shown below the box in the 3D View.
Support Forum:
https://blenderartists.org/t/screencast-keys-for-blender-2-80