I\'ve spent all night trying different tools for building cross platform desktop apps via html5 and so far appjs seems to be perfect. I\'ve only been playing around with the win
I was interested in the same technology almost year ago too. Also today I remembered about this problem and started to look for an answer. I'll mention that I DO NOT tried to create apps, just read the web. Here is what I've found.
Good frameworks so far:
Also I've found: Mobile Frameworks Comparison Matrix.
Still haven't found the One. Let me know if you find something interesting :)
EDIT:
CEF - Chromium Embedded Framework could be also interesting option. Someone stated AppJS is built on top of that.
EDIT
Nice categorization and few examples
Also looks promising Googles javascript apps