Apache JMeter is an open source desktop load testing tool, a 100% pure Java application, available on every OS (operating system) that supports Java 6 or later.
Apache JMeter Load Testing tool can be used for analyzing and measuring the performance of websites, APIs and various web services, by adding load through various type of requests ((HTTP, HTTPS, WebSockets, SOAP and REST web services, FTP and others) in order to determine the behaviour of the system under test.
JMeter helps to test the load and performance of servers, databases, networks and analyze its behaviour through multiple performance metrics like: response time, latency, hits per second, errors, response code, percentiles, standard deviation and others.
Written by Bogdan Vazzolla.