emby is a Plex alternative for all those who like to manage their media on their own server.
So if you have many films and photos digitally available and would like to centralize everything in one place, you can use software that acts as a server and delivers the content to the end devices. A corresponding client app will then run on the end devices. Plex follows this concept as well as emby.
There is the server software for the most different systems. Not only macOS and Windows were considered, but also Linus, NAS Devices, Docker and even FreeBSD. Also the mobile devices all find an app.
The installation is child’s play, the interface can be reached in the browser. The configuration possibilities are incredibly extensive. So it is rather a solution for users who like to invest something in the right settings, so that the whole thing runs in the end as one would like it to.
The basic functions of the software are free to use. But if you want to download movies to your iPhone to be able to watch them offline or have cover art for your media, you have to buy a subscription. It also includes a Cloud-Sync function and the Smart Home support for the control with Alexa or Google Home.
If you are interested, then you can read more about emby here.
