Kingfisher - Organize and explain just about anything.
DevDocs - Open source API documentation browser with instant fuzzy search, offline mode, keyboard shortcuts, and more
Explained Visually - An experiment in making hard ideas intuitive.
Zeal - Zeal is an API Documentation Browser.
Crowdcast - CrowdCast provides webinars & virtual conferences.
Loom - Loom is a screen recording extension for Chrome that gives people the ability to create and share media. Create your own videos using your camera, screen view, and audio. Read more about Loom.