CakePHP is a rapid development framework for PHP that provides an extensible architecture for developing, maintaining, and deploying applications. Using commonly known design patterns like MVC and ORM within the convention over configuration paradigm, CakePHP reduces development costs and helps developers write more expandable and cleaner code.

Plone is among the top 2% of all open source projects worldwide. The project has been actively developed since 2001, is available in more than 40 languages, and has the best security track record of any major CMS.
It is owned by the Plone Foundation, a  not-for-profit organization, and is available for all major operating systems.

Ruby on Rails is an open source web framework that is optimized for programmer happiness and sustainable productivity. It lets you write beautiful code by favoring convention over configuration.

Although we like open source, we can work with anything you want us to! We have used .net framework, interwooven and other closed solutions to guaranty maximum customer satisfaction and/or compatibility with pre-existing corporate software.

Although geekiness and plain HTML is great in our book, we have noticed that our customers tend to like beautiful things. So we had to learn javascipt. Actually, this site uses jquery.

jQuery is a fast and concise JavaScript Library that simplifies HTML document traversing, event handling, animating, and Ajax interactions for rapid web development.

On a lot of php based websites we use MooTools:

MooTools is a compact, modular, Object-Oriented JavaScript framework designed for the intermediate to advanced JavaScript developer. It allows you to write powerful, flexible, and cross-browser code with its elegant, well documented, and coherent API.