I've been self-hosting Mealie. I have about 200 recipes there I think. I don't use it a ton, but it's super useful for looking up a recipe on the go. It's permissions/accounts system is super nice as well. I haven't heard of KitchenOwl so I don't know how well they stack up.

I also self host flash paper, a mumble server (voice chat), and linkding. Link ding is mainly for adding websites to a QR code that will take people to a random website.

I've been thinking of spinning up a paperless instance.

One that I love is jumpcutter. Speeds up silences and makes watching long lectures way nice.

If I get back to my PC I'll send a few more extensions I use.