The "default IE4 (Internet Explorer 4) is the browser that comes installed on 98SE. I think, it's been so long, it may be IE5. IE4 may come on 98FE.
Anyway,
Mozilla and
Opera are alternatives to IE (Internet Explorer) and are usually sworn by those zealots that are pro Free stuff and swear Bill Gates is the Devil. Of course, I'm sure most would accept a check given by B.G.
You can find IE 6
here and I recommend you upgrade to it if you haven't already, along with going to
Windows Update to patch all the security holes and gather all the other various fixes.