O'Reilly Media book: Opa: Up and Running – Rapid and Secure Web Development

Opa: Up and Running:
Want to simplify web development? This hands-on book shows you how to write frontend and backend code simultaneously, using the Opa framework. Opa provides a complete stack for web application development, including a web server, database engine, distribution libraries, and a programming language that compiles to JavaScript.

O'Reilly Media book: RESTful Web Services

RESTful Web Services - O'Reilly Media

browsers and their developer tools

(from Head First jQuery)

• Google Chrome: http://code.google.com/chrome/devtools/docs/overview.html
• Firefox’s Firebug: http://getfirebug.com/wiki/index.php/FAQ
• Safari: http://www.apple.com/safari/features.html#developer
• Internet Explorer 8: http://msdn.microsoft.com/en-us/library/dd565628(v=vs.85).aspx
• Internet Explorer 9: http://msdn.microsoft.com/en-us/ie/aa740478
• Opera’s Dragonfly: http://www.opera.com/dragonfly/

what's the state of Perl for building web apps?

Perl on Heroku | Hacker News

"HTTP Client" - Mac Developer Tool for HTTP Debugging

HTTP Client - Mac Developer Tool for HTTP Debugging

"Charles" Web Debugging Proxy • HTTP Monitor / HTTP Proxy / HTTPS & SSL Proxy / Reverse Proxy

Charles Web Debugging Proxy • HTTP Monitor / HTTP Proxy / HTTPS & SSL Proxy / Reverse Proxy

Safari Books Online Content Team: Web Development Bibliography – free e-book

Web Development Bibliography:
Today's web applications are powerful and interactive that have to work equally well on a variety of web browsers on desktop computers, tablets, and smartphones. Many of the most popular web applications are able to do all of this while scaling to handle thousands of requests per second from all over the globe. It's a good thing that the list of technologies and tools for creating these web applications has also grown rapidly to enable web developers to build them. This guide allows you to tap into books and videos that cover the major technologies required to build Web apps: from JavaScript and HTML5 and CSS3 to Java and PHP to jQuery, Node.js and more.