I have used Ryot for a while. It is nice and has a lot of features. It has documentation, which is really nice.
I am using Media Tracker because it has most of the features I need and it's very fast. I wish it had genre sections like Ryot though. It looks like someone created an issue for it at least. Might go back to Ryot eventually, but we'll see. Luckily Ryot has a Media Tracker import option.
I mostly watch stuff on Netflix and Amazon prime, never thought to see if there is a way to auto update my watch history. I'm terrible about remembering to update my watch history.
I use MediaTracker, with the plugin for Jellyfin to track progress. It works pretty well. Kinda barebones and I'd like to see some creature comforts added, but the dev is busy (and they try to be responsive as best they can). I like that it is fully open source and lightweight. I almost did flox, but wanted movies and games too.
Update: I finally installed RYOT, and wow is it slow, and resource intensive. It's using more than 20% of the CPU on my NAS when it isn't even open! Might switch to Media Tracker...
Has anyone gotten the Mediatracker scrobbler to work with Kodi? I tried and it doesn't seem to update, at least with Seren, though I was under the impression scrobblers were addon independent.