XUL

You can write the app in XUL + JS and deploy on any platform Mozilla supports.

Scripting News for 9/20/07 « Scripting News Annex 2007

XUL is an incredibly easy language to create an app, and lets face it: making a transaction is, oh, a mouse up to the toolbar and a click of your bookmarklet.

Scripting News for 10/25/07 « Scripting News Annex 2007

I still like hacking in XUL, but that is mostly because there are somethings that are almost impossible to do in HTML (nice DND support from the desktop).

Fluid, Prism, Mozpad and site-specific browsers | FactoryCity 2007

It won’t require extensions to be written in XUL and will allow developers to use standard technologies such as HTML, CSS and JavaScript.

p2pnet World Headlines – May 21, 2009 2009

While I understand that XUL is basically XML + JavaScript + CSS, it’s still foreign to most web developers and designers and it’s not compatible with any other web browser.

So Mozilla wants to go mobile, eh? | FactoryCity 2007

Don’t get me wrong: volunteering to assist with the development of Firefox/XUL is a good thing.

Thoughts on Mozilla | FactoryCity 2007

Still, I look forward to seeing some strong suggestions of what we should be modifying in our strategy in order to make things better for the web (like, your point about XUL is well-founded, and I think that there’s a lot of similar talk on planet. mozilla.org at the moment about moving away from XUL in Mozilla2, on which the mobile effort will be based).

So Mozilla wants to go mobile, eh? | FactoryCity 2007

Boxely, Joe Hewitt’s souped up alternative to XUL, is live.

Gems from Matt | FactoryCity 2006

This is only natural, since it doesn't have XUL, which is required by the extensions.

harry.sufehmi.com 2009

Vladimir's interests include JMX, OSGi, Rich-Client technologies such as XUL and OpenLaszlo, and dynamic languages including Groovy, Python, JavaScript.

No Fluff Just Stuff 2009