Foreman
Foreman is in private beta.
Foreman is a task board for software work. You describe a change on a card, an agent makes it in your repository on one of your own computers, and Foreman opens the pull request for you to review.
Signing in needs approval
Only approved GitHub accounts can sign in. To ask for access, email [email protected] with your GitHub username.
Download the Mac app
You can install it before you're approved. It asks you to sign in with GitHub when it opens.