EmojiOne for Chrome - Finally, an emoji keyboard for the modern desktop.
Refined GitHub - Browser extension that makes GitHub cleaner & more powerful
Emoji CSS - Add Emoji's to your website
GitZip - Download or create a download link for a GitHub project folder/sub-folder or file.
OpenMoji 12.0 - Open source Unicode-compliant Emojis for everyone
GitHub Hovercard - GitHub Hovercard provides neat hovercards for GitHub.