Which toolkit for iPhone mobile webapps?

I'm aware of several Javascript frameworks that assist in creating webapps for the iPhone and ipod Touch:

• Joe Hewitt's iui -- http://code.google.com/p/iui/
• Ciui -- A revised take on Joe's work by Vladimir Olexa of CNET -- http://code.google.com/p/ciui-dev/
• WebApp -- by Chrilith. http://webapp.net.free.fr/ Unfortunately, he doesn't publish his code until after a release.

I'm leaning towards Ciui but want your thoughts.

Which toolkit do you use for iPhone webapps?

Thanks,

Larry

ADDED following from the answers:

• Sproutcore
• JQuery Mobile -- still under development. From the JQuery team
• JQtouch -- superset of JQuery. Possible issue of library size
• Cappuccino -- comment by Ryan McCuaig: by 280 North. In philosophy, they're porting Cocoa and Objective-C to the Javascript environment (right down to Objective-C style syntax extensions to Javascript and reusing NIB files. Quite incredible).
• Wink
• xui
• Jo by Dave Balmer (blog). Designed to work with PhoneGap, it can be used to build web apps for iPhone, iPad, Android, plus