Start your websites and web applications testing for load, stress, and scalability by using theses free testing tools, and the good part is you don't need to have any core programming skills for using them.
1. WebLOAD
WebLOAD supports a wide range of the web, mobile, and enterprise protocols and technologies. For example, HTTP/HTTPS, WebSocket, PUSH, AJAX, SOAP, HTML5, WebDAV and many others.
WebLOAD System Requirements: Windows, Linux
Download link: WebLOAD download
2. LoadComplete
LoadComplete is a desktop tool for load, stress, scalability testing of websites and web applications. Designed from the ground-up to help you focus on the tasks at hand, it does not require advanced programming skills. It works with both traditional HTML websites and with Rich Internet Applications using modern web technologies like AJAX, ASP.NET, Java, Flash, Flex, and Silverlight.
Download link: LoadComplete download
3. Apache JMeter
Apache JMeter may be used to test performance both on static and dynamic resources (Webservices (SOAP/REST), Web dynamic languages - PHP, Java, ASP.NET, Files, etc. -, Java Objects, Data Bases and Queries, FTP Servers and more). It can be used to simulate a heavy load on a server, group of servers, network or object to test its strength or to analyze overall performance under different load types. You can use it to make a graphical analysis of performance or to test your server/script/object behavior under heavy concurrent load.
Apache JMeter System Requirements: It works under Unix and Windows OS
Download link: Apache JMeter download
4. HP LoadRunner
HP LoadRunner is a software testing tool from Hewlett Packard Enterprise. It is used to test applications, measuring system behavior and performance under load. The new LoadRunner version is packed with features to support testing in Digital Transformation, Agile and DevOps environments, interface with popular 3rd party solutions, and improve usability and efficiency of performance testing
LoadRunner System Requirements: Microsoft Windows and Linux are the favourable OS for this measuring tool.
Download link: LoadRunner download
5. Rational Performance Tester
IBM Rational Performance Tester is a performance testing tool that identifies the presence and cause of system performance bottlenecks. Combining multiple ease-of-use features with granular detail, Rational Performance Tester simplifies the test-creation, load-generation, and data-collection processes that help teams ensure the ability of their applications to accommodate required user loads.
Rational Performance Tester System Requirement: Microsoft Windows and Linux AIX good enough for this performance testing tool.
Download link: Rational Performance Tester download