Introducing XUL - The 'Net's Biggest Secret: Part 1

Here's a question: what if I was to tell you that you can write your own version of Word using something like HTML and JavaScript? What if I added that you could run on your hard disk or launch it directly from your Web server and use it to update your site's content? It sounds a little far fetched, I know, but it's right here, right now -- and it calls itself "Zool".

http://www.sitepoint.com/article/xul-nets-biggest-secret-1