Portable Firefox 4 Beta 2 -Test out without affecting existing Firefox install

Firefox 4 is on the way and the beta 2 version has been released for the testing purpose. The main feature of this new release (Firefox 4 Beta 2) is App Tabs which allows users to place a permanent aviconed tab for websites on the tab bar.

How to have App Tabs in Firefox? App Tabs looks very similar to ‘Pin Tab’ feature of Google Chrome and every tab can be converted to App Tabs by just right clicking on the tab and selecting the option ‘Make into App Tab’


Powered by the Gecko 2.0 page-rendering engine, this new release has several improvements over its previous version like better support for CSS3, faster JavaScript, improved scrolling and better startup times, etc.

You can download Firefox 4 (beta 2) from the official release page. But, if would like to test this beta 2 without affecting your existing Firefox install you can use the Firefox 4 Beta 2 Portable version.

Kannan is a computer and Android enthusiast, a blogger by passion and a tech freak. His always ready-to-help attitude, knowledge and hard work is what drives him.


  1. Robin

    Jul 29, 2010 at 4:51 pm

    Firefox is getting more closer to Google Chrome. nice updates though.


    – Robin

    • Kannan

      Jul 30, 2010 at 2:21 am

      Hi Robin, thanks. Yes I think so?

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