I've been using Karakeep (formerly Hoarder) for a few months. So far, I like it. I particularly like having an iOS app so sharing new bookmarks from different apps is really easy. Instead of pulling from the browser, it retrieves its own copy with a headless Chrome, so if you need a login, the snapshot breaks. But, overall, I've been pretty happy.

But, I'll definitely check out Omnom too!

https://karakeep.app/