Open source license usage on GitHub.com

Open source simply isn’t open source without a proper license. Unless you’ve explicitly told others that they can modify and reuse your work, you’ve only showed others your code; you haven’t shared it. Here at GitHub, we’re big fans of open source, so we set out to better understand how our users approached licensing their code by looking at license usage across public, non-forked repositories, in hopes of encouraging more users to share their work with others.