Raindrop.io - All your articles, photos, video & content from web & apps in one place.
Linkman - Linkman Pro allows for managing large amount of URLs in its own database.
Linker - Cloud based bookmark manager
Pocket - When you find something you want to view later, put it in Pocket.
Bookmark OS - Bookmark OS is like Mac or Windows optimized for bookmarks.
Pinboard - Pinboard is a personal archive for things you find online and don't want to forget.