Chromecast was revolutionary when it launched because it turned your normal TV into a system capable of running multiple streaming apps. Even a smart TV that dropped support for apps could gain a new life with a Chromecast. However, there have been several Chromecast iterations, and now the cheaper alternatives are being phased out to make room for the Google TV streamer, which starts at $100. However, you can use a Raspberry Pi as a Chromecast replacement to enjoy a better TV experience.