Mozilla has declared the ultimate drape for its Prism app. The newest edition, Prism 1.0 b3, was launched a year before and it is compatible with Firefox 3.0 to 3.6, but not with Firefox 4. The project presented the initial site-specific browser that enables users opening web applications out of their browser to operate on the desktop, hiding the consumer interface to focus on content - that is predominantly pertinent for online applications and employ it on intranets. Chrome and Web Explorer 9 now present alike functionality.

Nevertheless, Mozilla hasn't gestured departure to site-specific browsers but again launched the project with different technologies and under a new name. Began past October and presently available as edition 0.1, Chromeless is to turn out to be a kind of browser kit. Similar to Prism, it's in line with the XULRunner run-time climate; Chromeless usually referred as more determined and enables programmers to build desktop apps using internet technologies that interrelate directly with the web - this is apparently comparable to Opera's incorporated widget engine.