Prototyping is an important step in the process of developing web applications, allowing you to test, refine, and clearly communicate ideas about how the application will work, before costly resources are spent on development. Here’s a useful little article from OneXtraPixel on the importance of utilizing wireframes in prototyping for the web, including an annotated list of tools for creating wireframes.

The Importance Of Wireframes In Web Design And 9 Tools To Create Wireframes..