Tunarr: Create and configure live TV channels from media on your servers

Maintainer here (and fan of ETV)! Currently, the most fundamental difference between Tunarr and ETV is scheduling methodology, though this is on the road to change. ETV takes a top-down approach; you schedule lists/collections (either custom, or just a whole series, for instance), clump those choices together, and customize how they "play out" their contents, e.g. "play 2 programs from series A, then play 4 programs at random from collection X".

Tunarr is, currently (and like it's predecessor dizqueTV), a bottom-up scheduler. You create a schedule with a flat list of programs (episodes, movies, etc). Then, you apply transformations to that list (grouping, padding, etc) in order to build your schedule. This is a bit of a simplification.

Both programs have a range of tedium in their scheduling, depending on how particular you are about your schedule.

Of course, ETV is more mature than Tunarr, so there are a lot of other features it has that Tunarr does not. It is also, likely, more stable. However Tunarr's streaming stability has come a long way and was the primary focus in the beginning of the project.