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Octo Perf - Commercial Saas online platform load testing service for web and mobile applications. Apica Loadtest - Offers flexible self service and full service load testing able to test 2MM concurrent users, through a network of 50 locations around the world.
Key features include: Record Virtual User, design realistic virtual users, run scenario from multiple locations (Europe, USA and more), analyze bench reports to find performance bottlenecks. Test on demand or automate testing throughout development lifecycles.
in the LFAQ section; there are also articles about web site testing and management in the 'Resources' section. Free open source version supports the HTTP protocol, the $pro version supports binary protocols.
They are easy to maintain and can be kept in a version control system.Report designer tool enables design/configuration of customized load testing reports.Gatling - Open source stress-testing tool developed in Scala.The tool is useful in scenarios where the requests have high response times.Many existing tools are developed for scenarios with high request rate and quick response times, and fail to keep up with load generation when server response times are high, as the number of outstanding requests becomes very large .