1. CSS Tab Menus
http://exploding-boy.com/images/cssmenus/menus.html

2. CSS Vertical Menus
http://exploding-boy.com/images/EBmenus/menus.html

3. Embedded Image in Firefox, Opera and IE and IE
http://www.bennherrera.com/EmbeddedImage/

4. Giffy Online Diagram
http://www.gliffy.com/

5. Web Developers Handbook
http://www.alvit.de/handbook/

6. Essential Web 2.0 Libraries (Amazing)
http://www.tonyyoo.com/protolize/

7. Free Icons for your Web
http://www.maxpower.ca/free-icons/2006/03/05/