https://www.mozilla.org/en-US/firefox/organizations/faq/mozilla.org wrote:Who should use Mozilla Firefox ESR?
Mozilla Firefox ESR is meant for organizations that manage their client desktops, including schools, businesses and other instituitions that want to offer Firefox. Users who want to get the latest features, performance enhancements and technologies in their browsing experience should download Firefox for personal use, as these improvements will only be available to ESR users several development cycles after being made available in Firefox for desktop.
IMO the latest version of FireFox (#30) is a nightmare , the ESR version, based on #24, seems much better to me.
Maybe someone could make a PET of FireFox ESR browser for Puppy users who want reliable browser rather than the latest buggy experiment from Mozilla.