Firefox ESR

Mozilla offers an Extended Support Release ( ESR ) based on an official release of Firefox for desktop for use by organizations including schools, universities, businesses and others who need extended support for mass deployments― 
 
 https://www.mozilla.org/en-US/firefox/organizations/faq/ 	 https://wiki.mozilla.org/Enterprise/Firefox/ExtendedSupport:Proposal 	 Downloads, http://ftp.mozilla.org/pub/mozilla.org/firefox/releases/latest-esr/ 
 	 Wikipedia, http://en.wikipedia.org/wiki/History_of_Firefox#Extended_Support_Release