Run test environments against local resources. Redirects requests for resources to any other. Useful when you want to run local JS and CSS against a deployed environment.
Replace matching URL requests from one domain to another. Useful when you want to run local JS and CSS against a deployed environment.

chrome://extensions/)Developer Mode (top right checkbox)Load unpacked extension
If you need to mix content - i.e. replace HTTPS requests with HTTP ones - then you will need to explicitly allow this in Chrome. Click the icon below and then “Load unsafe scripts” 
1.1 Fixed issue where scripts loaded via ajax (XHR) would result in Chrome issuing Request header field X-Requested-With is not allowed by Access-Control-Allow-Headers in preflight response1.2 Icon in Chrome toolbar that highlights green when Envious has matched anything in the tab. 