WebPagetest is an open source project that is being developed and supported by Google as part of our efforts to make the web faster.
WebPagetest is a tool that was orginally developed by AOL for use internally and was open-sourced in 2008. The software is available for download if you would like to run your own instance.
The public instance of WebPagetest at www.webpagetest.org is operated by the WPO Foundation.