If you use Mozilla Firefox as your web browser, but sometimes find websites that can only be viewed correctly in Internet Explorer for example, User Agent Switcher is your tool. It is an accessory for Firefox that lets you emulate the functioning of other browsers, letting you see the content of all websites.
By default, User Agent Switcher can emulate Internet Explorer 6.0, Netscape 4.8 and Opera 8.51, but you can add any other easily. To do this, just enter the Firefox compliments option and access the User Agent Switcher options. Once configured, with a right click of the mouse you can access your websites as if you were using another browser.