Recently, I've been creating https://shareweave.com. Right now it's just a simple discord bot to save messages to a tasklist and set reminders for them - it's mainly targeted towards people who manage communities and will likely expand to have more features to support community managers in the future.
I decided to use supabase because I wanted to have a web interfae for more flexibility, and I wanted it to be simple to do CRUD stuff and realtime in the future. I've tried a Mongo + Nodejs combo in the past for something similar, but found supabase to be easier. However, I did run into a problem with the auth. It seems that supabase isn't really meant for connecting to other apps. While most things were easy, one thing I stuggled with was the ability to use discord IDs in my app.
For instance, when discord sent my app a notification that someone wants to set a reminder for something, I needed to query a supabase table to find the discord ID for that user's settings. Supabase has docs about making a profile