Wallabag seems to be the best-known/best-supported open-source option in this space. If you don't want/need open source, but just a sustainable business that i

Wallabag seems to be the best-known/best-supported open-source option in this space. If you don't want/need open source, but just a sustainable business that is not part of a data-harvesting company, then pinboard.in is probably your best bet.