---

Facebook 9 top open-source projects from 2013

Facebook and open-source software go together like Jay-Z and Beyoncé — you just can’t have one without the other.

And if Blue Ivy is the product of the latter union, then we must draw parallels between that royal child and Facebook’s React, Rebound, HipHop, and other open-source babies.

As Facebook open-source lead James Pearce writes on the company blog, “Since Facebook’s first line of PHP, and its first MySQL INSERT statement, open source has been a huge part of our engineering philosophy.”