Sign up to receive the #1 source for Web and mobile performance benchmarks.

Our FREE indices are conveniently emailed to you once a week, right after they are released on our Web site.

Performance Index: Business Top 40

The Keynote Business 40 Internet Performance Index (KB40) measures the average download time for the home pages of 40 important US-based business Web sites

Sites may be temporarily removed from published results due to insufficient data points for a particular week.