This one is really great for everyone who is working with mootools. A mootools cheat sheet. Go print, paste it on your walls and work! 
“ThickBox is a webpage UI dialog widget written in JavaScript on top of the jQuery library. Its function is to show a single image, multiple images, inline content, iframed content, or content served through AJAX in a hybrid modal.” Go check it out and see the examples! Great stuff!
Here you will find “the creation of a custom navigation bar with some cute Javascript effects that will certainly impress your friends”.
Symfony is a web application framework for PHP5 projects. Symfony provides a lot of features seamlessly integrated together, such as: simple templating and helpers, cache management, smart URLs, scaffolding, multilingualism and I18N support, object model and MVC separation, Ajax support, and much more…
CodeIgniter is a powerful PHP framework with a very small footprint, built for PHP coders who need a simple and elegant toolkit to create full-featured web applications.
Prototip allows you to easily create both simple and complex tooltips using the Prototype javascript framework. If you also use Scriptaculous you can even add some nice effects to them.
With Scripteka you can view an extensive library of Prototype and Script.aculo.us based extensions and rate and use rating to find the coolest scripts out there.
FancyForm is a powerful checkbox replacement script used to provide the ultimate flexibility in changing the appearance and function of HTML form elements. It’s easy to use and degrades gracefully on all older, non-supporting browsers.
A really nice effect for a menu using pictures. I love it!
