Here is a list of people or companies that are regarded as experts in the industry of performance testing, performance engineering, or software testing. Mostly performance only. You should recognize some of the names as leading vendors of load and performance testing tools. Click on the name below to view their blog.

There are some key performance testing people that are included here that seem to have dropped off the blogging scene. Both Scott Barber and Patrick Lightbody have gone dark. So to help you know what might be "fresh" or "stale", we added a comment on each regarding blog posting frequency.

Web Performance Today - written by Joshua Bixby, the president of Strangeloop, a company that designs and implements site acceleration solutions. Posts at least weekly - sometimes daily.

Dynatrace - a continuous application performance management software vendor that has the most prolific blog about performance engineering and monitoring. Excellent information about web architecture, engineering issues, browsers, and tuning. Posts at least weekly - sometimes daily.

Soasta - there are two blogs at Soasta where one is technical and the other is CEO's musings. Skip the CEO stuff. This link is to the performance engineering content where Dan Bartow does a great job of explaining architecture problems that create bottlenecks. There are a few other bloggers, but Dan is more prolific. They sometimes go a month or more without posting, but have posted about bi-weekly in 2011.

Scott Price - a web application geek that writes interesting blogs about load testing. He is one of the founders of LoadStorm. His writing usually has something funny in it - although the humor can be obtuse. Great way of putting complex concepts into easy-to-understand explanations. Posts about weekly.

Corey Goldberg - a software engineer from Boston that is a Python guru. He is the author of Pylot (an open source performance test tool) and Multi-Mechanize (a web performance and load testing framework) - both written in Python. His blog posts are interesting, but pretty heavily focused on Python code or communities. Posts about monthly.

BrowserMob - most of the blog posts are about the company or load testing tool. Since Patrick Lightbody stopped posting on his personal blog, most of his recent thoughts are found on this blog. There are several release notes, references to outages, updates to Selenium, and good performance tips and tricks. Posts about weekly.

Gomez - several employees at Gomez, now owned by Compuware, post interesting articles about web load testing, performance impacts of Ajax/Flex/RIA, product news, and comparative data on performance of various large websites. Posts about weekly.

Keynote - there are several posts about cloud and application monitoring that are insightful. The focus seems to be more on monitoring, but performance testing is also covered, with an apparent emphasis on browsers. Posts about weekly.

Scott Barber - a consultant and author that has been working with performance testing tools for 15+ years. Very knowledgeable. He is the Executive Director of the Association for Software Testing. He seems to be writing more for books than his blog lately. The only posts in 2010 are touting his interviews or webinars by other companies. You can consider this blog dead.

Patrick Lightbody - a seasoned web developer that has expertise in Selenium. His blog contains an eclectic set of information about topics such as web application development, SEO, startups, security, Java, scripting, and lots of Selenium. It looks like his last post was in July 2009. Still, he's a player in our space and you might gain value from some of his insights.

Jared Quinert's notes on software testing and development, focusing on agile and context-driven approaches. He is a testing consultant located in Melbourne, Australia. With over fifteen years of experience, I specialise in agile testing, context-driven testing and intelligent toolsmithing with a focus on business outcomes over process. As one of the most experienced agile testers in Australia, I've been diving in hands-on since 2003 to discover how to build successful whole-team approaches to software development.

Neil Gunther - from the heading on their site: TAKING THE PITH OUT OF PERFORMANCE
GUERRILLA GEEK-SPEAK ABOUT LOCAL SILICON VALLEY MACHINATIONS AND OTHER INFOTECH GOINGS ON, AS WELL AS INSIGHTS INTO COMPUTER PERFORMANCE ANALYSIS AND CAPACITY MANAGEMENT BASED ON BOOKS, GROUP DISCUSSIONS, TECH TRAINING AND TOOL DEV AT PERFORMANCE DYNAMICS COMPANY.

Others that we haven't written a summary for (yet):

AlertSite

Stuart Moncrieff

Acutest

Altentee

LoadTester

LoadImpact

Xceptance

Ben Simo

Google Testing

Shmuel Gershon

Removal companies Exeter