Firefox 4 has finally arrived, after months of delays and after rival Web browsers Internet Explorer 9 and Chrome 10 already shipped. The browser gets a speed boost and several feature enhancements that are so significant that they all have their own proper names, like Panorama, JaegerMonkey and Firefox Sync. Were they worth the wait? Let's take a look.
The first, obvious difference is that the tabs are in a new location, up at the top. Plus, if you start typing a site name in one tab, Firefox checks to see if you already have that site open in another tab - and then lets you switch to that tab instead of opening a new instance. If you don't like the tabs on top, you can switch back by going to View > Toolbars > Tabs on top.
Speaking of tabs, are you one of those people who open so many tabs you can't keep track of them all? Firefox 4 has a feature called "Panorama" that lets you organize tabs into groups. You can then easily zoom into any tab in any group. To activate the feature, choose "Customize" on your toolbar and add the "Tab Groups" button.
If you keep a certain site open all the time, you can right click on the tab and choose "Pin as App Tab," which will create a mini-tab that loads every time you start Firefox. Mozilla suggests things like Web mail, but you can do this with any kind of Web site. The example here shows Slashdot, Gmail and Twitter.
Web browsing gets cloud-ified with Firefox Sync. Integrated into Firefox 4, the service lets you put your browsing history, bookmarks, tabs and passwords into the cloud, which means you can have all of that information with you when you go to another computer or a mobile device running Firefox. It sounds like a useful service, but obviously, privacy and security are key issues here. Mozilla says it uses encryption end-to-end.
Going to Tools > Add-ons get you to an attractively arranged interface for showing you not only what extensions and plug-ins you already have installed, but also what add-ons you might be interested in.
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