WebLOAD: Webload is an enterprise-scale load testing tool which features powerful scripting capabilities, so you can test complex scenarios. WebLOAD supports hundreds of technologies – from Selenium to mobile, web protocols to enterprise applications and much more.
Apache JMeter: It is an Apache Open source load testing tool, written in Java 6+ and supports all platforms. Recently, Apache released the stable version of JMeter “v2.11” that supports all platforms.
NeoLoad: It is a Neotys load and stress testing tool for Windows, Linux, and Solaris, available in English and French with the latest version 4.2, designed to measure, analyze and improve the performance of the website.
LoadRunner: It is a load testing tool for Windows and Linux, given by HP to test the web and other applications very efficiently before it goes to end user hands. It is available in stable version 12.0 in many languages.
LoadUI: A load testing tool “LoadUI” latest version is 2.7, written in Java, JaveFX, and Groovy language, and supports all platforms. Mostly, support web services and SopaUI 5.0 (functional testing tool).
Loadster: A commercial load testing tool to test websites, web applications/services (HTTP web services) and to simulate and guess how web applications will perform under heavy load, given by Loadster, supports Linux, Mac, and Windows.
Telerik Test Studio: A software testing tool is to test web and desktop applications of all Windows OS, developed by Telerik. It tests the functionality, performance, and load of web, desktop, and mobile applications.
Qtest: A web load testing tool analyses the application completely and accurately, given by Quotium Technologies SA, supports all Windows platforms.
Wapt: Provides an easy and cheapest way to test websites, like; business applications websites, mobile websites, web portals, etc. Testing requires 500MB of free disc space, browsers (Microsoft IE 6 or higher, Firefox 3.0 or higher, and Google Chrome), and OS of 64 bit version.