bttn - Press the bttn & Magic Happens™ (internet connected button).
Keysmith - Create custom keyboard shortcuts for your Mac and the web
flic - Bluetooth Button - Control you smartphone with this wireless button!
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.
SureOrNot - Automatically detect whether a shared article is outdated
XMenu - A little collection of free utilities for the Mac to make your life easier.