From Unified Intents:
Unified Remote is an application that lets you control your entire Windows computer from your Android device. It turns your device into a WiFi or Bluetooth remote control for all the programs on your computer. It is easily the most feature-filled PC remote available. With our app you can control a wide range of applications, including simple mouse and keyboard, media players, and other external hardware that can be connected to your computer. Check out our hardware section for a list of officially support hardware extensions. Unified Remote Server application runs on your computer. Currently we only support Windows.