GitHub Metrics - Customize your profile with various plugins and metrics
RegExr - RegExr.com is an online tool to learn, build, and test Regular Expressions.
Contributions for GitHub - Show your GitHub contributions graph on your iOS Devices
rubular - A ruby based regular expression editor
GitHub Contributions - All your GitHub contributions in one image
RegEx Generator - RegEx Generator is a simple-to-use application that comes with the brilliance of intuitive regex and is also helping you out to test the regex.