Some enterprising Zend Framework contributors have hacked together a couple plugins for Mozilla Firefox and Internet Explorer. Ralf Eggert has created a sidebar to allow easy access to commonly used links, as well as a search module. From this idea, Richard Thomas was inspired to create a plugin to search the framework wiki and mailing list using Firefox's built-in search box. 

They both take two or less clicks to install, so what are you waiting for?

Zend Framework Sidebar 

Visit this link, and click the link at the bottom of the page to create a bookmark. Open the bookmark to activate the sidebar.

Zend Framework Search Widget 

Go to this page, click the link for the Zend Framework, and you're good to go. You can search the mailing list and wiki right inside Firefox using the search box in the upper-right corner of the browser. For details on how this was accomplished, check out the wiki page.