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
Titanium Desktop (now called TideSDK) is not dead. It has been taken over by the community and is in full swing for a new version coming out this year. There are a good amount of developers working on it, as well as many people from the community contributing example code, documentation, and tutorials.
If your looking for serious cross platform this is a great way to go, as for your executable, it turns the application (using some special build scripts) into a native installer for Window, .DMG file for Mac, and whatever format you need for *Nix platforms.
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
Actually node-webkit supports executables, even though it includes a node.js runtime with the app itself. So it adds extra memory. But overall it works great!