Load Testing in the Cloud
The better way to load & performance test your website. Join 4,000+ customers in saving time & money.

Performance Testing

Load testing allows web developers to know how their applications respond under heavy volumes of HTTP traffic. The performance of your website is critical to your revenue, and web performance tuning can increase your profit by 10%.

LoadStorm puts massive cloud resources in the hands of web developers to enable them to improve the performance of their web applications. Create your own test plans, and generate up to 50,000 concurrent users in realistic scenarios. Virtual users can login to your application using your own test users or purchase products with your test credit cards. Use random linking to get broad coverage of traffic patterns.


Why has LoadStorm become the new leader in on-demand load testing?

  • It solves the problems with cost - everybody can afford it.
  • It saves time - simple to build test scenarios without scripting.
  • It eliminates hassle - no download, no install, no configuration, no hardware needed.
  • It delivers key performance metrics - see them in real-time graphs.
  • It makes web developers happy - testimonials continue to pour in from customers.
  • It is guaranteed.



performance testing load volume

Graphs like this one show you quickly how your load testing is ramping up virtual users. You can see how many requests per second are being generated in relation to the kilobytes per second of throughput moving between the browsers and your servers.

The graph below helps you to see how your application is performing by displaying response times and the percentage of errors occurring. Every request is tracked and every response is measured accurately to allow you to spot performance problems when they happen. Other reports show you the slowest pages, images, stylesheets, and Javascript responses. Error reporting lists every resource request that failed and the status code provided by your server.

performance testing load response

Our performance testing tool is built on the Amazon EC2 cloud computing infrastructure, so we have the horsepower to deliver your largest load tests. We offer a free plan and two ways to buy. Monthly subscriptions give you unlimited test runs, and Storm on Demand allows you to pay per test.

Sign up for a free account and prove it to yourself. There is no risk, and we don't even ask for a credit card.

Improve Performance

Looking for a simple way to speed up your site? We found a cool performance solution that can deliver HUGE improvement without rewriting your web application. aiCache web application acceleration is a new partner with LoadStorm because they can help our clients where we cannot. It's a great alternative to buying biggers servers, implementing load balancers, or re-architecting your app.

Placing aiCache in front of your web servers increases the number of requests per second and concurrent users you can sustain by orders of magnitude - delivers in excess of 250,000 HTTP requests per second while managing hundreds of thousands of connected clients.

Woot.com uses LoadStorm for performance testing and aiCache to handle the crush of traffic. They have saved a bunch of money and eliminated time spent optimizing.

more information

New Pricing Model

Storm on Demand Users Cost
250 $9.97
500 $19.95
1,000 $39.90
5,000 $199.50
10,000 $399.00
25,000 $997.50
50,000 $1,995.00

To See All Plans & Pricing Details

Web Developers Like Us!

“I deeply resent every second of my life I waste by thinking about load testing. All I ask is that our site be tested with a lot of traffic and without a bunch of BS for me to deal with. Thanks to LoadStorm, I need never again lose another moment to this insufferably tedious aspect of my job. I can feel the rage melting away.” - Shawn Miller, Web Developer, Woot.com

"I am definitely a fan of LoadStorm. I like its ease-of-use and the way in which the solution scales." - Darin Creason, Sr. Software Engineer, TransCore Corp

"LoadStorm is a great product at a great price with fantastic support. Setup time is minimal and the learning curve is low which was essential for us. I couldn't be happier with LoadStorm! Thanks again for your excellent support and product. - Nate Woolls, Director of Software Technology, InstallerNet, Inc.

"You guys are the best. Great customer service." - Melinda Keedy, Windstream Communications