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IETester is a free (both for personal and professional usage) WebBrowser that allows you to have the rendering and javascript engines of IE11, IE10, IE9, IE8, IE7 IE 6 and IE5.5 on Windows 8 desktop, Windows 7, Vista and XP, as well as the installed IE in the same process.

Known problems and limitations :

*The Previous/Next buttons are not working properly
*Focus is not working properly
*javascript "alert" and "confirm" methods are not working
*The input type file is not working (the file selection dialog does not open)
*Java applets are not working
*Flash is not working on IE6 instance in user mode : A solution is to launch IETester as admin user and Flash will work.
*CSS Filters are not working correctly in user mode : A solution is to launch IETester as admin user and CSS Filters will work.
*windows.open does not return the newly created window but null (IETester limitation)