Yes, the OS is called Android TV which is a version of AOSP designed for TVs and remotes.
Only a few devices I know have them: Google Nexus Player, Mi Box, and Nvidia Shield
Netflix, Hulu, Amazon Video, YouTube, and plenty of other apps created for Android TV are all designed to be remote-friendly.
The Shield, although 3 years old, is still the top android box on the market. The problem is that it's nearly 2-3x the cost of a Dreamlink or Formuler box. Plus you don't get the best looking IPTV app on the market: MyTVOnline/DOL2