TestFlight - iOS beta testing on the fly.
GitZip - Download or create a download link for a GitHub project folder/sub-folder or file.
Visual Studio App Center - Continuous everything – build, test, deploy, engage, repeat
Refined GitHub - Browser extension that makes GitHub cleaner & more powerful
Boombox.io - iOS devs rejoice! Embeddable HTML and hosted TestFlight beta sign-up forms.
GitHub Hovercard - GitHub Hovercard provides neat hovercards for GitHub.