DNS Overrider for Chrome
More About DNS Overrider
Using DNS Overrider you can replace hostname on the fly without access to system settings such as hosts file. DNS Overrider enables you to select what rules to apply via the extension settings page.
DNS Overrider is a useful Chrome extension for website and blog developers (both front-end and back-end developers). If you work with a test version of your site, you can easily and instantly override hostnames for images, scripts, anchors, style sheets without making any changes in the code and evaluate website markup and design correctness.
DNS Overrider extension is intuitive and easy to use. Install the extension, enter an orignal hostname in the "hostname" field, then input a desired alias in the "alias" field and click the "add" button. The rule will be applied to all pages which contain any elements of the provided hostname.