Do you selfhost paperless-ngx?

Indeed I do. It's not necessarily something I find myself using every single day, but it's come in handy on so many occasions, I can't imagine NOT having it now. I'm (slowly) scanning all my existing paper archives in and shredding them, only keeping the physical copies of things that make sense (eg. birth certificates). The more data I put into it, the more useful it is.

Great list - picked up a couple new ones for myself. Thanks.

Adding to your list:

• Paperless Mobile An almost fully-fledged mobile app for my Paperless-ngx server
• Syncthing Helped me (with Photoprism) replace Google Photos, but also syncs backup files made by other apps (Tasker, Signal, calls & texts, etc) from my phone to my computer overnight
• Simple Search Completely configurable search widget, lets me search with my private Whoogle servers from my phone's home screen
• Shelter A lot like Insular, lets you utilise work profile for your own needs - apps, files, etc.
• Droid-ify Another F-droid alternative