Internet Explorer Portable Old Version [better] -

Web developers often need to ensure their sites render correctly (or degrade gracefully) on older machines. While tools like Internet Explorer 11 "Enterprise Mode" or BrowserStack exist, having a local portable instance of IE8 or IE9 offers a quick way to debug specific rendering bugs without rebooting into a virtual machine.

True portability—where an application runs entirely from a folder or USB drive without touching the host system's registry—is technically impossible for Internet Explorer. internet explorer portable old version