Tools to Make the Life of a Web Developer Easier...
*HTML Entity Character Lookup
*960 Grid System
2- Css thing which is part of Firebug.
Jump on google and search for web development tools or web developer's tools and see what comes up.
Software programs such as Adobe Dreamweaver, Adobe Illustrator, Coffee Cup, Smart FTP, Ultra Edit and Web Editor are a few of the basic tools all web editors need to know about.