Outside a trendy workspace in London's Kings Cross on Thursday 21st April, a man in a fox costume ushers people greets people on their way to celebrate the launch of Firefox 4. Inside people are wearing party hats, enjoying decorated cupcakes and proudly wearing Mozilla T-Shirts in a good reminder to us all that open source software is something that we should both advocate and celebrate as a great opportunity. During the evening we get treated to some great presentations that show off what the latest version of Mozilla Firefox is capable of and also how HTML5 technology will redefine our expectations of what a web browser can do. However, there is much more to Mozilla than Firefox.