I'm looking for a way to display keyboard shortcuts (hot keys).
I'm using the free LiceCAP myself. Today I found that the free app KeyCastr has been updated for Big Sur: Release v0.9.10 · keycastr/keycastr · GitHub.
I've also found that there's KeyDrawer (19,00 USD). But I haven't tested it yet. KeyDrawer Pro - render keystrokes on the screen of your Mac