They're all Web browsers, and they all need to be kept up to date to stay safe online. Don't know what a Web browser is? Click here to find out.
Each of these has multiple versions out there at any given time, as updates are released, and some people opt to update, but others don't.
Outdated versions of browsers can leave you and your personal information open to hacks. So it's critical that you always have the most secure and updated version of your browser.
But how do you know which one you use? And how do you know it's up to date? I've got you covered.