Firefox will eventually let users turn web apps into desktop apps
But sometimes if all you want to do is access your email account or an online image editor like Picnik, you don't really need to fire up a full fledged web browser. A while back Mozilla created a project called Prism that lets you create a desktop shortcut that will open just a single page at a time in a stripped down version of Firefox. Now it looks like Mozilla is planning on integrating that feature with a future version of Firefox.
Here's how it would work. When you visit a web-based application, you'd be able to click a button to turn it into a desktop app. This would create a desktop shortcut to the application and users would be able to open a window showing just that app. For certain applications, like the Flickr Uploader or Zoho Docs, Firefox might allow you to drag and drop files to upload or create file associations in your operating system so that every time you click on a Word document, for example, Zoho Docs would be opened instead of Microsoft Word.
Right now these features are still in the planning stages. But we could see them in future versions of Firefox. Of course, Google Chrome already has a similar feature which lets you create an application shortcut out of any web page with a click of a button using Google Gears.