Diigo - Diigo is a powerful research tool and a knowledge-sharing community
Snipper.ml - A simple snippet manager in the menubar
Zotero - Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.
Codespace - A beautiful cross-platform code snippet manager
WorldBrains Memex - Bookmarking for the power users of the web. A privacy focused extension to annotate, search and organize what you've seen online.
DhiWise - DhiWise is a ProCode platform that helps you build clean, scalable, and customizable native and cross-platform apps. Focus on what matters as a programmer and let DhiWise do the rest.