Chrome Developer Tool - Develop and Debug Chrome Apps & Extensions. By Google
Refined GitHub - Browser extension that makes GitHub cleaner & more powerful
GitHub Student Developer Pack - The best developer tools, free for students.
GitZip - Download or create a download link for a GitHub project folder/sub-folder or file.
Spaceship ZSH - Powerful, customizable Zsh prompt, your own spaceship 🚀
Zube - Project management for developers.