SnappyJ is a Java library designed to ease Web 2.0 development. It was developed to take the pain out of developing Web pages that asynchronously reload sections of themselves. Performing these types of asynchronous reloads properly and professionally is harder than one might initially expect. The key challenges are loading Indication, support for browser history, error handling, code complexity, and having reloadable sections that interact with each other. SnappyJ completely eliminates these challenges, making it quick and easy to develop complex application-like Web sites.