Mozilla Firefox - the browser is very fast, and speed of apparent not only during loading web pages, but when looking at bookmarks and history. Made it through the engine, and Mozilla allows you to view all Web pages in one window mnogovkladochnom, but also has many other useful options, including the ability to significantly enhance connectivity plug-ins (and released them a great many).
Main features of Mozilla Firefox:
"Pop-up Blocker (born pop-up)
"Support the tabs (English tabbed browsing) (a few pages in one window)
"Built-in search bar in search engines and dictionaries
"So-called" Live Bookmarks "(born Live bookmarks) - the mechanism of integration of RSS-streams
"Ample opportunities to configure the behavior and appearance
"Support for multiple extensions
"Built-in tools for web developer
"Automatic updates of both the browser and its extensions (version 1.5)
"The mapping of content at once (makes it comfortable to continue surfing even with incomplete page loads, especially when a slow connection and a large number of embedded objects)

Mozilla Firefox - faster, more secure, easier to use and sporting a new look, this latest Firefox release sets a new standard for web browser innovation. Mozilla Firefox project (formerly Firebird, which was formerly Phoenix) is a redesign of Mozilla's browser component, written using the XUL user interface language and designed to be cross-platform. It is small, fast and easy to use, and offers many advantages over other web browsers, such as the tabbed browsing and the ability to block pop-up windows.
Mozilla Firefox 3 is focused on improved memory handling, performance, and stability, improved XUL, and new core components such as application data stored in SQLite. Mozilla Firefox 3 could break a few existing extensions and applications built on top of Firefox, and it will definitely include new optimizations if you like to build on the popular browser. Mozilla Firefox 3 should have additional javascript and SVG features if you're into that sort of thing.

Features in Firefox include:
- Easy migration: Switching to Firefox has never been easier now that Firefox imports data like Favorites, history, settings, cookies and passwords from Internet Explorer. Firefox can also import settings from Mozilla 1.x, Netscape and Opera.
- Smaller Download: Continuing efforts to make this the most efficient browser, the Windows version of Firefox is now only a 4.7 MB download, making downloading Firefox a breeze for dial-up and broadband users alike.
- New Default Theme: A new default theme provides a bright new look for Windows and Linux users.
- SmartUpdate: A new SmartUpdate feature notifies users of new versions of Firefox to ensure that the browser is always up to date.
- Help: A new online help system makes this one powerful, friendly browser.
- Extension / Theme Manager: New Extension and Theme Managers provide a convenient and secure way to manage and update the hundreds of add-ons that set Firefox apart from other browsers

Download;
Win:
Linux:
Mac: