I've been using linkding for a while and really liking it. I'm always able to find stuff that I vaguely remember bookmarking 18 months ago, without much faff, so that's a good sign.
I've been using Linkding for about six months and really like it. Simple, lightweight, uses SQLite. There's an official Firefox/Chrome plugin to make bookmarking links easy. And my favourite is the linkding-injector plugin. If you use the injector than everytime you search on Google/DuckDuckGo you get a sidebar which shows search results from Linkding. Surprising how often past me is trying to help out future me!