<p>Connect with leaders from the companies in this story, in real life: Come to the fourth annual VentureBeat Mobile Summit April 14-15 in Sausalito, Calif. Request an invitation.</p><p>At Facebook, the codebase that runs the social networking site is written in Hack.</p><p>The Menlo Park, Calif.-based social networking titan said it had streamlined PHP, made it better, and that Hack was now the official language running the site used by 1.2 billion users. Facebook engineers embellished the code internally and announced the upgrade Thursday, according to a post.</p><p>Facebook did not post the update to its site, but the beta version is now live and can be seen here.</p><p><a href="http://venturebeat.com/2014/03/20/facebook-unveils-hack-a-faster-programming-language-to-power-the-social-network/">Keep reading...</a></p><p>Read also:</p><p><a href="http://www.zdnet.com/facebook-releases-hack-programming-language-to-help-devs-speeds-up-coding-7000027562/">Facebook releases Hack programming language to help devs speeds up coding</a> (ZDNet)</p><p><a href="http://bits.blogs.nytimes.com/2014/03/20/facebooks-hack-a-language-of-tech-competition/">Facebook&#039;s Hack, a Language of Tech Competition</a> (New York Times (blog))</p><p><a href="http://www.wired.com/wiredenterprise/2014/03/facebook-hack/">Facebook Introduces &#039;Hack,&#039; the Programming Language of the Future</a> (Wired)</p><p>Explore: <a href="http://news.google.com/news/more?ncl=dbGwHlStKX20fXMHHaGYrLNnqe2_M&authuser=0&ned=us">39 additional articles.</a></p>