These are some of the common tools I use for web development.

Great tutorials for beginners and professionals alike.
http://net.tutsplus.com/

PHP Frameworks:
http://www.yiiframework.com/
http://codeigniter.com/

CSS Frameworks:
http://960.gs/

Js Libraries:
http://jquery.com/
http://prototypejs.org/

IDE's:
http://netbeans.org/
http://notepad-plus-plus.org/

Other:
Analytics - http://www.google.com/analytics/
Css3 prefixer - http://prefixmycss.com/
Javascript Obfuscator - http://www.javascriptobfuscator.com/