However, before, users reported the compatibility issue in the Firefox Browser, which has been slowly updated. Fast and Reliable, however, not as fast as Chrome, but it certainly comes after that.Due to its privacy, it can rank as one of the best browsers for Mac. If you are low on RAM, Firefox might be the best browser for your operating system. Firefox provides excellent service securing the way you roam around on the internet. Mozilla Firefox is not as fast as Chrome, but where it has shown its game is on privacy protection.