PhoneGap is an open source development tool for building fast, easy mobile apps with JavaScript.If you’re a web developer who wants to build mobile applications in HTML and JavaScript while still taking advantage of the core features in the iPhone, Android and Blackberry SDKs, PhoneGap is for you.
PhoneGap: Solution for Web Developers to Create Applications for iPhone, Android and Blackberry
PhoneGap lets developers wrap web applications inside a native application using WebKit, making development easier for those who aren’t familiar with Objective-C and Cocoa. In fact, the framework even includes a tool for easily doing this type of “native web app” packaging. And if a native web app wrapper sounds like it would be right up your alley, you can download PhoneGap for free and give it a whirl.