CodeTriage - Help out your favorite open source projects and become a better developer while doing it.
CodeGophers - Your personal army of programmers
24 Pull Requests - 24 Pull Requests is a little project to promote open source collaboration during December.
Growmodo - Hire world-class digital marketers In minutes
Gitpay - Add bounties to solve Git issues from projects.
Scale - Get human tasks done with just one line of code.