Unified Remote - Unified Remote is a software app available for iPhone, Android, and Windows Phone mobile operating systems. It's designed to turn your smartphone into a universal remote. Read more about Unified Remote.
TouchPortal - Touch Portal is a companion app to control a PC or a Mac by using a deck of buttons to improve the workflow & productivity of game streamers, content creators and professionals.
KDE Connect - Integrate Android with the KDE Desktop
Macro Deck - Use smartphone as macropad for pc
Youtube Control - A simple and ready to use remote controller to youtube
Deckboard - Deckboard helps you create macros for Windows PC and launch them on your phone.