Plex is a streaming media server with support for every major operating system, smartphone, and streaming device on the market. It lets users download their favorite shows, music and movies, then stream them to any device with a Plex app.What is a Plex application?
Plex is also a media center application – that is, a program that makes it easy to access your media. Plex acts as an organizer, content discovery tool, and portal to all of the content on your server – as well as to streamable content from outside of your personal collection.What is Plex Inc?
Plex is a global streaming media service and a client-server media player platform, made by Plex, Inc. The Plex Media Server organizes video, audio, and photos from a user's collections and from online services, and streams it to the players.