Codecast lets you code HTML and CSS and view the output side-by-side, negating the need to switch between your code editor of choice and your browser window.

Want to see just how versatile web-technologies are? If so, you will definitely want to check out this neat interactive iPhone 4 created using CSS3. Developed and designed by Ukrainian Web developer ...

jsFiddle lets developers play with the three core elements of Web development. Check out this powerful application for rapid prototyping and testing.