Raindrop.io - All your articles, photos, video & content from web & apps in one place.

Firefox Sync - Bring your Firefox bookmarks, tabs, or passwords wherever you go with Firefox Sync. Share between computers and mobile devices. Get Firefox now!

Pocket - When you find something you want to view later, put it in Pocket.

LinkLocker - LinkLocker is a lightweight bookmarking service with an emphasis on privacy.

Tagpacker - A free tool to quickly collect, organize, and share your favorite links.

Linkman - Linkman Pro allows for managing large amount of URLs in its own database.