You may or may not know what Drupal is. However, when you're using a website, there's a decent chance you're using it. It's one of the Web's most used open source content management platforms, and it's currently being used to operate millions of sites.

But Drupal didn't start as a content management system. It began as a way for Drupal's creator to tell his friends the status of their shared, high-speed Internet access. As more and more people suggested ways of expanding the software, Dries decided to open source code, and a huge community grew around it.

Today, Drupal is one of the largest and most popular open source software platforms in the world. Find out how that happened on this episode of Web Masters where Dries Buytaert, Drupal's founder, tells the story of building Drupal.

For a complete transcript of the episode, click here.