Firefox 3 Beta 5 is a developer preview release of Mozilla’s next generation Firefox browser and is being made available for testing purposes only. These beta releases are targeted to Web developers and the testing community to gain feedback before advancing to the next stage in the release process.

Firefox 3 Beta 5 includes more than 750 changes from the previous beta, improving stability and web compatibility, providing platform and user interface enhancements, and resulting in the fastest Firefox ever. Many of these improvements were based on community feedback from the previous beta.

Mozilla provides Firefox 3 Beta 5 for Windows, Linux, and Mac OS X in a variety of languages. You can get the latest version of Firefox 3 Beta 5 here.