Lots of references to tools like Karabiner and Keyboard Maestro, but by default macOS lets you rebind it to a few things. If you go to Settings > Keyboard > Keyboard Shortcuts > Modifier Keys, you can set caps lock to act as control, option, command, globe, or escape (which is the most useful one IMO). Best thing is that this setting is also per keyboard – if you have a laptop that you regularly dock with an external keyboard, you don’t have to have the Caps Lock key on that keyboard mapped the same as on the internal keyboard.

Lots of references to tools like Karabiner and Keyboard Maestro, but by default macOS lets you rebind it to a few things. If you go to Settings > Keyboard > Keyboard Shortcuts > Modifier Keys, you can set caps lock to act as control, option, command, globe, or escape (which is the most useful one IMO). Best thing is that this setting is also per keyboard – if you have a laptop that you regularly dock with an external keyboard, you don’t have to have the Caps Lock key on that keyboard mapped the same as on the internal keyboard.