I just posted about this on !fediverse@lemmy.world, but figured 'd share it here as well. :)
I'm the author of lemmyverse.net and I've recently been working on a new moderation tool called Lemmy Modder.
https://modder.lemmyverse.net/
Currently, it supports user registration/approvals and content report management. I offer it either as a hosted app (which is currently only compatible with Lemmy 0.18 instances) or a package that you can run alongside your Lemmy instance (using Docker-Compose)

Feel free to give it a go and send any feedback my way :)
https://github.com/tgxn/lemmy-modder
Edit for a note: This tool does not save, proxy or store any of your user credentials or data to me, it is only ever stored locally in your browser. I also do not use any website tracking tools. ๐
Lemmyverse supports mbin already! there's a little option in the top right menu. (migrated from kbin)
I'm mainly interested in Lemmy communities (given the name) and given I've mostly run out of time for features, they are a bit slower lately ๐