It can acquire content from files, iTunes, iPhoto, Aperture, or the Internet, and automatically organize them by metadata tags such as title, artist, album, genre, year, and popularity. PMS is the back-end component, free of charge. Plex Media Server (PMS) stores, organizes, and streams all content the playback client applications run on myriad devices and web browsers. Plex is a media player system with a client–server model. Plex Web App is a browser-based interface for users to manage libraries, server settings, and watch content. As of August 2019, it had about 100 global employees. Domestic Television Distribution, MGM, Lionsgate, Regency Enterprises and Legendary. announced ad-supported video on demand (AVOD) of TV shows and movies available globally to free Plex accounts, from publishers including Warner Bros. Feingold declared Plex apps had been downloaded about one million times.

At that time, Plex had 130 apps, the most popular of which were viewers for Apple Movies Trailers, YouTube, Hulu, Netflix, MTV Music Videos, BBC iPlayer, and Vimeo. was founded with Ullman as CEO and Feingold as CTO. In December 2009, the US-based Plex, Inc.

The OSXBMC code was kept roughly in sync with the upstream XBMC code. Due to different goals and vision from the XBMC team, they soon forked the code to become Plex, and published it on GitHub. The developers continued collaborating with the Linux-based XBMC project until May 21, 2008. The team released early versions of the port, called OSXBMC, intended for eventual full integration into Mac OS X. They contacted him and offered support and funding, forming a three-person team in January 2008. Around the same time, Cayce Ullman and Scott Olechowski-software executives who had recently sold their previous company to Cisco-were also looking to port XBMC to OS X, and noticed Feingold's progress via XBMC online forums.

He ported the media player XBMC (since renamed Kodi) to Mac OS X. Plex began as a freeware hobby project in December 2007 when developer Elan Feingold created a media center application for his Apple Mac.

The official clients and unofficial third-party clients run on mobile devices, smart TVs, streaming boxes, and in web apps. The Plex Media Server organizes video, audio, and photos from a user's collections and from online services, and streams it to the players. Plex is an American streaming media service and a client–server media player platform, made by Plex, Inc.

Plex online