Microsoft's Internet Explorer 2.0 wasn't really a serious browser, but one day mr Gates seems to have woken up from a bad dream about Netscape becoming an operating system or something equally threatening. For he did mobilize!
Virtually overnight Microsoft developed the Internet Explorer 3. A worthy competitor to Netscapes new Navigator 3. Giving away the Internet Explorer entirely for free, Microsoft was suddenly becoming a threat to Netscape's whole existence. The browser war had started.
There wasn't any giant leap between Navigator 2 and 3. Everything just got slightly better. But the difference between Internet Explorer 2 and 3 was a really astounding. Not only did the new browser implement most features from Navigator 3 (albeit in a Microsofty "Windows enhanced" fashion). In some aspects it was even further developed. It was the first major browser with stylesheet support, and it could handle the PICS system for content metadata.