Raindrop.io - All your articles, photos, video & content from web & apps in one place.
Pocket - When you find something you want to view later, put it in Pocket.
Keep Everything - Light & Fast Web Archiver for iOS, OS X.
start.me - A Modern-day bookmark manager. A place for your favorites. A news feed (RSS) reader. A browser startpage. A portal for your team.
Instapaper - Instapaper is a simple tool to save web pages for reading later.
Bookmark OS - Bookmark OS is like Mac or Windows optimized for bookmarks.