Chrome Sniffer

Detect web applications and javascript libraries run on browsing website.  

Syntaxtic

Performs syntax highlighting on files visited in the browser based on thier extension

XML Tree

Displays XML data in a user friendly way.  

Clicky Monitor

A Google Chrome™ extension for Clicky Web Analytics.  

JSONView

JSONView for chrome is an extension that helps you to parse and view JSON documents  

JavaScript API Search

This extension adds support to the Chrome omnibox to search for and autocomplete JavaScript functions and prototypes from online JavaScript reference documentation.

jQuery API Search

Speed up your jQuery JavaScript programming with the jQuery API Search extension for Google Chrome. The extension integrates with the Chrome omnibox to provide autocompletions from the jQuery API, taking you quickly to relevant docs.

PhP API Search

Adds support to the omnibox to search the PHP reference docs.

SEO Lite Tools

On-Page / External metrics, Social Media info, PR / numbering on Yahoo, Bing, Google SERPs.Extends WMT, YSE and GA with metrics

Yslow

Make your pages faster with Yahoo!'s page performance tool