1) Amazon
2) Kodi* on next gen Apple TV - My stored video library is 90% HEVC/H.265 and the A8 iny 4th Gen 64GB Apple TV just can't handle it.
*Once Infuse (Apple TV Video Library/Player app that is indesccribably awesome) gets a powerful hardware engine to work with on the next gen ATV it'll be great as well.
I actually bought a $200 Nvidia Shield Android TV (Sorry for the explicit language there.) and recently a $250 Intel NUC which is running a Celeron!! (They're for different rooms.)
But because these devices have have dedicated HEVC hardware decoders, they don't need serious internals, although the Shield is as powerful as the iPhone 7 Plus (Shield has 3GB RAM also.) AND it came out in May 2015, a full 5 months before the ATV 4.
The A10 in my iPhone 7 Plus can eat HEVC for breakfast with no official hardware support simply due to the fact that it is an insanely powerful SoC.