Zeal - Zeal is an API Documentation Browser.
Tweetflick - Save, organize & find Tweets to get the most out of Twitter
DevDocs - Open source API documentation browser with instant fuzzy search, offline mode, keyboard shortcuts, and more
Bookmark OS - Bookmark OS is like Mac or Windows optimized for bookmarks.
DASH - DASH is a secure, blockchain-based global financial network which offers private transactions.
Bookmark It - Create awesome notes on YouTube videos