Chrome Developer Tool - Develop and Debug Chrome Apps & Extensions. By Google
Piktab - Discover free graphic resources on every new tab
GitHub Student Developer Pack - The best developer tools, free for students.
Dev Tips - A developer tip, in the form of a gif, in your inbox
Spaceship ZSH - Powerful, customizable Zsh prompt, your own spaceship 🚀
Product Design Tips - Product design tips delivered via your browser