Firefox includes an option for bookmarking all open tabs, but heavy users of tabs will find that this option is hardly enough. When you are researching a subject, the particular combination of tabs matters as much as the individual ones -- and, besides, selecting the tabs to open individually can be tedious if you are dealing with several dozen.

The Firefox browser stores not only a user's bookmarks, history, saved forms, and usernames and passwords, but frequently also several extensions and themes. When you're switching computers or distro-hopping, replicating the browser environment can be tricky and time-consuming.

Firefox only (Windows/Mac/Linux): Experimental Firefox extension TooManyTabs organizes extra browser tabs in Firefox, allowing you to store over 50 extra tabs in a special row for quick access at a later time.

Mozilla have announced Firefox Home, an iPhone application which is a read only view of Sync for Firefox (formerly Mozilla Labs Weave)

Enough people loved Firefox's history and bookmark searching location bar that the name "AwesomeBar" caught on. While this tool is great for productivity, its omniscience is a serious privacy concern. Don't let your boss see that you've been looking for a new career on job search Web sites.

Firefox only (Windows/Mac/Linux): Firefox extension Find In Tabs searches for text across all of your open Firefox tabs. It does so by adding a Find in Tabs button to the find bar that switches from the normal single-page search to a multi-tab search.

Midori is a lightweight web browser with the following features: Full integration with GTK+2; Fast rendering with WebKit; Tabs, windows and session management; Bookmarks are stored with XBEL; Searchbox based on OpenSearch; Custom context menu actions; User scripts and user styles support; Extensible via Lua scripts....

All the cooler kids may be Firefox devotees, but I'll happily admit to being a fan of Internet Explorer 7 on Windows Vista. I like almost everything about it, from its layout to its tools to the way it handles tabs. There is, however, one thing about Firefox I really love and wish was in IE7.

"[...]it's official: while Firefox 3 boasts some great new features like a smart address bar and better bookmarks manager, the best reason to upgrade will be for the performance improvements. Firefox 3 is noticeably faster and more stable than Firefox 2 to the casual user and Mozilla engineers have numbers that show it will be the fastest browser on the market."