The Mozilla Foundation has announced 25 million downloads of its Firefox browser.
This achievement has taken just 100 days.
The Foundation added that its group of Firefox volunteers, Spread Firefox, now numbers 70,000 members. The browser is now available in 28 different languages.
"Twenty five million Firefox downloads is a significant achievement, and we see that number continuing to grow," said Mitchell Baker, president of the Mozilla Foundation.
"Firefox is being rapidly adopted by the mainstream, with this audience embracing Firefox as a more user-friendly Web browsing solution," he said.