I use Linkwarden. It’s similar to Raindrop, as mentioned by the other comment, but self hosted. It even creates archived copies of saved pages, similar to archive.org. My Links is a community made iOS client for it, and there’s an android client as well which I don’t know the name of.

Another popular option is Karakeep. It seems to have slightly more features, and it’s been a hit since I’ve tried it, but Linkwarden had the edge on UI/UX imo. Try both and see what you like.

They posted about the crypto investor (who is also on their board of directors now)