Refined GitHub - Browser extension that makes GitHub cleaner & more powerful
Harlow - Harlow helps freelancers get organized, save time, and look professional with automated invoicing, proposal templates, and much more—all from one centralized hub.
Gitstalk - Discover what your favorite GitHub users are up to
Kosmo - Kosmo helps you automate your freelancing business. Including sending invoices, tracking time, managing projects and more.
Board for Github - A webview based GitHub project app with native features
Dubsado - Dubsado is flexible — it gives you 5 (now 6!) ways to add new leads. Best of all, 5 ways are automated.