I love developing usable and rich web applications using the latest techniques available.

Brennen’s Blog posted a nice list of Dev Tools & Websites for the ‘Power Developer’

Validators

• HTML/XHTML Validator
• CSS Validator
• Feed Validator (RSS and Atom)

Javascript

• Prototype Javascript Framework
• Script.aculo.us
• Yahoo! JavaScript Developer Center
• Javascript Lint

Websites

• A List Apart
• Position Is Everything
• Quirks Mode
• WaSP
• CSS Zen Garden
• CSS Crib Sheet
• Yahoo! Browser Grade Chart

ASP.NET

• Atlas Toolkit
• Web Application Projects
• Web Deployment Projects
• CSS Control Adapters
• Web Development Helper
• Script#
• CSS Properties Window
• Scott Guthrie’s Blog
• Nikhil Kothari’s Blog

Proxy Tools

• Fiddler, HTTP Debugging Proxy
• ProxyTrace