The Internet is rich with websites with useful information or tools for web design. I’ve captured a few here that I find interesting.

Site Description
w3schools.com One-stop shopping for HTML, CSS, XHTML, etc. references.
Adobe Kuler A color scheme generator that helps you find the perfect blend of colors for a project.
TypeTester An online tool that allows you to view various fonts and stylings and compare them, without the hassle.
Tynt Insight A service that allows you to see what’s being copied from your site. Also offers SEO improvements.
Read my review.