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

Diigo - Diigo is a powerful research tool and a knowledge-sharing community

Pinterest - Pinterest is a visual discovery tool that you can use to find ideas for all your projects and interests.

Zotero - Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.

Bookmark Sidebar - Adds a toggleable sidebar with all your bookmarks at the edge of your browser window.

WorldBrains Memex - Bookmarking for the power users of the web. A privacy focused extension to annotate, search and organize what you've seen online.