Quick access to popular libraries, frameworks & tools online developer documentation. With all these great frameworks & libraries out there, it's hard to master each one of them. D2 (Developer Documentation) provides links to online documentation of the most popular frameworks, libraries and other development tools, so you’ll able to get some answers quickly. How To Use 1. Click on the extension's logo to open the links list. Alternatively, you can set a keyboard shortcut on Chrome Extensions page (chrome://extensions/ >> Keyboard shortcuts) 2. Open a link: - Click on the search icon, type a tool's name and click on its link, or: - Type a tool's name and click enter, or: - Scroll down with your mouse and click on any link