This works in 1.21.1 except for chest sharing. other than that its a great plugin to help make a better item sorter than hoppers alone.

Good plugin but whenever I try to invite my friend to use mine it just says theirs an api error.

Extremely useful; any way to allow a command block to execute the sort command? I suspect it may because it's a user-specific command.

I love this plugin. We're just sorting all of our stuff. At first we thought that using such a plugin would be lots of work, but the process of adding the items is very well done. Thank you for making this.

I've just installed this plugin and it seems amazing. I did quite a bit of testing and everything seems to work as intended! The filter creation process is a little strange (i.e enabling/disabling add mode) but once you figure it out, it make filtering quite easy.

My only suggestions would be to add some type of HUD indicator (like action bar or boss bar) and integrate with PlaceholderAPI (whether you're in filter add mode, where your main chest is, who it's shared with, etc). I've built this into a Chest Menu so the players don't have to remember commands, but this would make it even better. Also, if it's at all possible to add players who are offline (either via player name or UUID) that would be awesome.

I used this plugin on my server to make it easier for people to organize their chests and ran across no errors so far. Seems to work as intended. Once you learn how to use it, this plugin is very simple and makes organizing much easier for you and your players as you can just throw things into a chest that you don't want to organize, run the command /sorter sort (after you set up the chests where the items will sort into) and you're done. Automatically organizes everything for you exactly how you wanted it to be organized. This plugin basically makes it so that players can make factories as well, as you just add your workers to the drop-off chests. Great plugin, 10/10 recommend for towny.