Glow 1.0

We launched the first version of with the Firefox 4 release in March 2011 as a way to visualize Firefox downloads and community involvement around the world. Thanks to the development skill of Matthew Claypotch and Jeff Balogh, and the design talents of Sean Martell, it was a great success, with more than 1.2 million unique visitors and frequent press mentions. (It was also a pretty nifty demo of some of the best open technology the modern web has to offer.)

The first version of Glow used several technologies including SQLStream and HBase to process download request logs in real time and make them available for the site to display. If you are interested in learning the technical details behind Glow read this article from the Mozilla Metrics team, which has links to the code repositories:

As we move toward a new rapid release cycle, we are finding new ways of measuring Firefox success across the globe. So, we’ve temporarily pulled Glow offline while we cook up the next awesome iteration. Thanks for your support, and stay tuned for more Glow in the near future!

The source code for the original site is at (frontend) and (backend). - 8,604,788 - Download Stats

Here are a few of the many articles written about Glow:,2817,2382394,00.asp,12437.html

About Ryan Snyder

Ryan Snyder is the Web Production Manager at Mozilla.