Jellyfin

Jellyfin is the volunteer-built media solution that puts you in control of your media. Stream to any device from your own server, with no strings attached. Your media, your server, your way.

Jellyfin enables you to collect, manage, and stream your media. Run the Jellyfin server on your system and gain access to the leading free-software entertainment system, bells and whistles included.

Jellyfin is the "new kid on the block" as it is the newest in a long line of free and open source media servers.

Jellyfin's predecessors have either become defunct, lost popular support or upon becoming successful switched to a "pay" platform (I'm specifically thinking of Emby for that last one).

I am hoping Jellyfin becomes the Ubuntu of the media server world.

While it still has a way to go to compete against Plex, it has made great strides in the past couple of years. Thanks to a growing skilled community of supporters who believe you can have a great self hosted and self controlled media server at home.