Re: Bunch of Browsers?
Err ... hardly any now! Three only in actual development getting new releases:
MS has two today, one is going to be phased out. Edge is to replace IE
Opera is gone, they are now using WebKit engine, as does Chrome and Safari. Chrome is simply Google's spyware version of Webkit, I think made open source by Apple?
Firefox, Iceweasel, Seamonkey, AFAIK are all based on Mozilla's development of Netscape.
They are all inspired by Mosaic (I have a version, maybe 2 .x, here somewhere on floppy).
It's news to me if there is any other usefully functional graphical browser actually out of alpha, that does CSS, never mind HTML5?
https://en.wikipedia.org/wiki/Comparison_of_web_browsers#Vulnerabilities