Internet Explorer 5 — Windows 98 Simulator
Internet Explorer 4 was woven into the Windows 98 desktop (the "Active Desktop"), which led to the famous antitrust case. The web of 1998 was Yahoo!, GeoCities, Netscape and dial-up modems; pages were small, animated GIFs were everywhere, and the "e" logo spun while a page loaded.
Internet Explorer 5 from Windows 98, browsing the web as it looked back then: pages load from the Internet Archive’s Wayback Machine, as close as possible to the year you choose.
Type an address such as yahoo.com or geocities.com, pick another year from the Archive menu, and use Favorites, History, Back and Forward like in 1999.