I found this out last year when I was trying to update Firefox and couldn't. Safari is, security wise, unusable now on 10.11 and everyone else has dropped support a long while ago. One of my main MBP is still on 10.11 and finding out that Brave was still supporting it was an awesome sight to behold.My one Mac Pro is stuck in El Capitan. Firefox is ESR. Just discovered Brave works in El Capitan. Wow!