Pocket - When you find something you want to view later, put it in Pocket.
Raindrop.io - All your articles, photos, video & content from web & apps in one place.
wallabag - Save the web, freely.
Superdense - No text, just icons.
Buku - A powerful command-line bookmark manager.
Bookmark OS - Bookmark OS is like Mac or Windows optimized for bookmarks.