JSONGuide Json formatter - Online JSON Formatter / Beautifier and JSON Validator helps to format JSON data, validate, parse, view, edit and beautify. Save and Share formatted JSON
Refined GitHub - Browser extension that makes GitHub cleaner & more powerful
JSONFormatter.org - Online JSON Formatter and JSON Validator will format JSON data, and helps to validate, convert JSON to XML, JSON to CSV. Save and Share JSON
GitZip - Download or create a download link for a GitHub project folder/sub-folder or file.
JSON Editor Online - View, edit and format JSON online
GitHub Hovercard - GitHub Hovercard provides neat hovercards for GitHub.