HyperCap

Real ones know Caps Lock is the most useless key on any keyboard—it's just a middle finger waiting to ruin your emails. HyperCap turns that waste of a key into a hyperkey, so you hold it plus any other key to trigger shortcuts, macros, whatever you want. The entire app is just that one function, which is exactly the point. If you use keyboard shortcuts daily, this is a no-brainer. If you don't, you won't get it, and that's fine.