FirefoxMozilla's open-source browser — championed web standards and challenged Internet Explorer's dominance. 3 refined the browser that broke IEInternet Explorer — Microsoft's browser that dominated the web in the 1990s and 2000s.'s monopoly: smarter address bar suggestions, malwareMalicious software — viruses, worms, trojans, and ransomware designed to harm systems or steal data. protection, and lower memory use. Its launch day set a record for software downloads — signaling open-source browsers as mass-market products.

FirefoxMozilla's open-source browser — championed web standards and challenged Internet Explorer's dominance. 3 was the peak mindshare moment before ChromeGoogle's web browser — built on Chromium and the most widely used browser worldwide.'s rise.

It proved MozillaThe organization behind Firefox — advocates open web standards and internet privacy. could ship polished consumer software at massive scale.