Keysmith - Create custom keyboard shortcuts for your Mac and the web
iCanHazShortcut - Simple shortcut manager for OS X 10.8 or higher.
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.
CustomShortcuts - Customize your Mac menu keyboard shortcuts for free.
Apptivate - A simple, beautiful hotkey manager.
SureOrNot - Automatically detect whether a shared article is outdated