Community controlled languages - Perl - PHP - Python
Scott is the president of Melbourne Perl mongers, the driving force behind the Open Source Developers' conferences, and works at MyInterent.
The Zaltana project is the fusion of PHP, Perl, Python, Ruby on Rails, Java and more into the one application framework, by doing no code in any of the above.
It provides a single sign-on, single look and feel and it does not matter whether the code is from an existing or new project, template or static page. And it does all this in a manner that is well documented, reproducable, and most importantly of all, completely independently - allowing reuse of every component, even outside of Zaltana.
At his sitepoint.com blog, Matthew Magain says of Zaltana:
[Scott Penrose] has added HTML hooks to the templates of common web applications such as SquirrelMail, MediaWiki and other custom objects and methods in order to provide a common look and feel across the whole framework for his clients that is reusable.