Shortcuts.design - Every shortcut for designers in one place!
CheatKeys - View Windows keyboard shortcuts in the current application.
KeyCue - Menu shortcuts are supposed to provide quick access to frequently used menu commands.
Hotkey Commander - Find out and override what hotkey combination is registered by which application.
Alfred - Alfred is an award-winning app for macOS which boosts your efficiency with hotkeys, keywords, text expansion and more. Search your Mac and the web, and be more productive with custom actions to control your Mac.
Shortcuts Map - Shortcuts Map will help you to manage hotkeys assigned to shortcuts on the desktop or in the Start menu hierarchy. With the straightforward user interface, you can easily to change a hotkey or find an unused hotkey.