Designing a web application? Familiarize yourself with Rich Internet Application technologies and 43 Essential Controls for Creating your Web Applications.

Rich Internet Application technology has empowered us to create really amazing user experiences. The best RIAs on the web today rely on a discreet set of UI controls to provide a lively and timely experience. If you are moving from web site design to web application design, the best information you can have at your disposal is an understanding of these essential controls.

Many products are siloed by the RIA framework they are using, and designers create novel controls when the framework doesn’t have what they need. This can decrease the usability of the product, and increase the amount of design effort, usability testing, technical specifications and development time. Before you succumb to designing a brand new control, you should learn what’s out there.

Source: 43 Essential Controls for Creating your Web Applications