Some useful web design tools

For browser compatibility…Can I use…http://caniuse.com/ 

HTML5 Boilerplate helps you build fast, robust, and adaptable web apps or sites. Kick-start your project with the combined knowledge and effort of 100s of developers, all in one little package. http://html5boilerplate.com/

Markdown is a text-to-HTML conversion tool for web writers. Markdown allows you to write using an easy-to-read, easy-to-write plain text format, then convert it to structurally valid XHTML (or HTML)http://daringfireball.net/projects/markdown/