Genericons : Genericons are vector icons embedded in a webfont designed to be clean and simple keeping with a generic aesthetic.
Use genericons for instant HiDPI, ...
Silk Icons : “Silk” is a smooth, free icon set, containing over 700 16-by-16 pixel icons in strokably-soft PNG format.
Feather : Feather is a collection of simple open source icons. Each icon is designed on a 24x24 grid with an emphasis on simplicity, consistency and readability...
Beanstalk : Code hosting for private teams.
Imagine a single process to commit code, review with the team, and deploy the final result to your customers.
