Plex is a versatile media server that can run on Macs, PCs, Nvidia Shield, and NAS devices. Clients can run on a wide range of devices and on web browsers. Plex makes your media available at a speed and resolution tailored to your Internet bandwidth and device resolution. The following is a 20-minute introduction to Plex in a home environment:

The big news for Plex is the DVR function including hardware trans-coding:

Plex vs Kodi (big picture differences)

Kodi playback of Blu-Ray: