Although it looks like Apple is about to turn the Apple TV into a PlayStation-killing video game console, it’s not the indisputable king of the hill of streaming media boxes right now. Roku, Fire TV, Chromecast … all have their advantages over the Apple TV except for one killer feature: AirPlay Mirroring, which allows the Apple TV to stream anything running on your iPhone, iPad or Mac.
If you don’t have an Apple TV, you can’t use AirPlay Mirroring, right? Actually, you can — as long you have a Raspberry Pi.