Our Download of the Day is Firefox 12.0 Beta 5.
Experience cutting edge features but with more stability
Provide feedback to help refine and polish what will be in the final release
Performance Enhancements: Faster startup time on Mac, Windows, and Linux
Optimized Memory Use:
Improved memory management: For many users, memory use is reduced by 30 percent or more, responsiveness is enhanced
Firefox Sync: Bookmarks and passwords now sync instantly
Enhanced Font Rendering: Fonts are rendered clear and sharp
New platform features and developer tools:
Telemetry: Users can opt-in for automatic memory usage, performance testing and reporting to help improve future versions Firefox
Web timing spec: Measure performance characteristics of websites as users experience them
Azure Direct2D for Canvas: Canvas-based animations on the Web are dramatically faster
You can read more on Firefox 12.0 Beta 5 and other beta releases, as well as download them, here.