Plex is a media player system and software suite comprising many player applications for 10-foot user interfaces, and an associated media server that organizes personal media stored on local devices. It organizes audio (music) and visual (photos and videos) content from personal media libraries and streams it to mobile devices, smart TVs, and streaming boxes.
Plex is a bit of an interesting one, as much like Kodi you can play files stored locally, but unlike Kodi you need these files on a server running Plex server software and the seperate software to play the files. If you purchase a Windows stick as your cordcutting device, you can run both pieces of software on the same device, otherwise you’ll need a NAS or server or a router than runs Plex software.
Plex has a massive following, as once you have it set up you can stream content to almost all your devices, but it takes more initial setup than Kodi.