This is the first release candidate of our next generation Firefox browser, to be released later this year, and it is being made available to our developer and testing community for compatibility testing and to solicit feedback.
Download Release Candidate
Firefox 1.5 RC 1 for Windows, English (5.0MB)
Other Systems and Languages
Note: This is not the final release of our Web browser, it has been made available for testing purposes only, with no end-user support. If that sounds scary, you'd probably be better off with the latest version of Firefox 1.0.