Sandkar's Web developers help site

CSS Developers

www.css3generator.com
www.css3.me
css3please.com
layerstyles.org/builder.html
css3.mikeplate.com
css3maker.com
colorzilla.com/gradient-editor
westciv.com/tools

CCS Tools

http://aptana.com/
Hex color to RGBA
Google Webfonts

CSS Checkers

validator.w3.org
csslint.net

CSS information

alvit.de/handbook
reference.sitepoint.com/css
css-tricks.com