FTP or WGET come to mind. Of course you can open up your package manager and pull it from a repository.
Oh please, that's not an option for the masses. I teach basic computing (among other courses) and if people don't even know how to use a mouse correctly you think that they're capable of installing a browser? NOT!!! There are a lot of people who would never be able to access the web if their computers didn't come with a browser. Not everyone is a computer techie.