Performance testing evaluates the performance characteristics of a system or application under a specific workload. It helps identify bottlenecks, determine the maximum capacity of the system, and ensure that the system meets the performance requirements and expectations of end users.

There are many tools available for performance testing. The choice of tool depends on the specific requirements of the system under test and the type of performance test to be performed. Some of the most commonly used tools for performance testing are:

Apache JMeter: An open source tool for load testing and performance testing of web applications.

LoadRunner: A commercial tool from Micro Focus for load testing and performance testing of applications.

NeoLoad: A commercial tool for load testing and performance testing of web, mobile and API applications.

Gatling: An open source tool for stress testing and performance testing of web applications.

AppDynamics: A commercial tool for monitoring and analyzing application performance in real time.

SolarWinds AppOptics: A commercial tool for monitoring and analyzing the performance of applications and infrastructure.

WebLOAD: A commercial tool for load testing and performance testing of web applications.

HPE LoadRunner: A commercial tool for load testing and performance testing of applications.

LoadUI: An open source tool for load testing and performance testing of web applications.

BlazeMeter: A cloud-based tool for stress testing and performance testing of web applications.

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