Firefox and Chrome extension to retrieve cached versions of a specified URL.
Passive Cache uses Google's text-only cache service and Archive.org Wayback Machine to display historical versions of a specified web link. This add-on allows for the viewing of a page, or site, while avoiding active connections to the target site.
Firefox download: https://addons.mozilla.org/en-us/firefox/addon/passive-cache/
Chrome download: https://chrome.google.com/webstore/detail/passive-cache/iifhekoepobpejmipdmpfjhiniggjdag?hl=en