What are the best new application you’ve used recently? Most likely, it’s something Web-based, like Gmail, Google Maps (now known as Google Local), the Flickr photo-sharing site, or the Amazon A9 search site.

Those sites all use AJAX (asynchronous JavaScript and XML) which combines several existing technologies, including CSS, JavaScript, XHTML, XML, and XSLT, to build Web applications that look and work more like desktop software than they do Web sites.

They also provide a glimpse of the future, one in which when broadband connections are everywhere available, there’s no need to have bloated applications like Microsoft Office on your PC. Power up your computer, automatically connect to the Web, and you’ll have productivity applications available just by heading to a Web site.

Imagine Google Office. It would be free, and have a word processor, spreadsheet, and presentation software. Would you spend several hundred dollars to buy Microsoft Office if something like that were available for free on the Web?

A lot of people were hoping that Sun and Google were going to announce something like that a few weeks ago. But they were looking for the wrong thing — for Google to distribute OpenOffice.org on its Web servers.

That’s not the future. The future is an AJAX-built productivity suite. And I’d be willing to be that you’ll see it in the next few years.

Do you think an AJAX application could kill off Microsoft Office?