Wikipedia
BlazeMeter is a commercial, self-service load testing platform-as-a-service (PaaS), which is fully compatible with open-source Apache JMeter the performance testing framework by the Apache Software Foundation. BlazeMeter provides an enterprise grade, ‘out-of-the-box’ load testing solution for the developer community. In December 2011, BlazeMeter launched after raising $1.2M in financing from YL Ventures.
BlazeMeter provides developers with tools for a simple integration into their native development environment by providing mobile, web application, website, web-service or database testing that can simulate thousands of users visiting a website simultaneously using the Amazon Elastic Compute Cloud (EC2) service. Users can run multiple load tests in order to locate and fix performance bottlenecks.
BlazeMeter's load testing platform has built-in integrations that can be extended with a series of custom plug-ins. BlazeMeter currently provides a free plugin to JMeter, a Drupal module, and a Jenkins CI plugin for load testing.