Emby is jellyfin with extra support and development. The apps came out earlier and for more platforms. It supports IPTV. Theres some pretty responsive forum support. Jellyfin may have these things too, but I chose Emby at the time for its native WebOS app.

Joking aside, I do have a lifetime subscription to Emby, which shares a lot of the same code as Jellyfin. But the lifetime subscription was $99 which I viewed as a thank you donation to the developer(s). In the past 5 years or so it has been an excellent value.