CSS/HTML Validator
Enter your URL and this site will evaluate your website according to W3C CSS standards and give you a report on how well you comply.
Link
Faster load time of hover buttons
cssjuice.com Gives us a few lines of css code that dramatically increase the load time of hover buttons. Load one image instead of two.
Link
Free Ecommerce website template
CSS crème has a very professional looking ecommerce template downloadable for free. Have a look at their other free css templates as well.
Link
Multi column liquid css layouts
Some great multi column css templates. All popular layouts are represented. All for free, courtesy of Matthew James Taylor.
Features:
No CSS hacks
iPhone & iPod Touch compatible
SEO friendly
Full length column background colours
No Images
No JavaScript
Resizable text compatible
Stackable columns
FREE for anyone to use
Link
More Rounded Corners
I get more hits from people searching for rounded corner css techniques than anything else. I only have a few, but CSSJuice.com has a great big list of over 25 different techniques here:
Link
CSSVista
This (currently) free software allows you to edit you CSS code and see the results live in both IE and Firefox at the same time. Available now is version is 0.15
Link
Image tips
Like rollover tooltips, this clever Javascript/css class allows you to annotate images so that a particular piece of text shows up when the viewer rolls over a particular part of the image.
Link
