Firefox Sync - Bring your Firefox bookmarks, tabs, or passwords wherever you go with Firefox Sync. Share between computers and mobile devices. Get Firefox now!
Raindrop.io - All your articles, photos, video & content from web & apps in one place.
Tagpacker - A free tool to quickly collect, organize, and share your favorite links.
Diigo - Diigo is a powerful research tool and a knowledge-sharing community
Pocket - When you find something you want to view later, put it in Pocket.
Flipora - flipora is a Personal Browsing History Search Engine.