About Prospector: LessChrome HD

The core feature here is to give as much space to the page and only show the browser interface when needed.

The default browsing behavior now is to only show tabs at the top of the window, and pointing there will reveal the rest of the browser.

Prospector is a series of experiments from Mozilla Labs focused on analyzing, experimenting and prototyping enhancements for how you search and discover content with Firefox. We’re focused on three main areas: websites you've visited, tabs you're currently viewing, and pages you haven’t visited yet.