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Load Testing Tools Resources
Tools that can help a website or intranet application developer to ensure that it sustains the desired load.
www.load-testing-tools.com/

Web Application Load and Stress Testing
WAPT is a load and stress testing tool for web sites and intranet applications with web interface. Accurate load simulation, run-time test data generation, recording and play back of secure HTTPS requests, clear graphs and reports. [Commercial, trial version]
www.loadtestingtool.com/

Red-Gate Software: .NET testing tools
The Advanced .NET Testing System (ANTS) is for load and scalability testing of .NET web services and other web applications. [Commercial, trial version]
www.red-gate.com/

Apache JMeter
Graphical server performance testing tool, for both static and dynamic resources (files or CGI, Servlets, Perl scripts). It may be used to simulate a heavy load on a server or network to test its strength or to analyse overall performance under different load types. [Open Source, BSD-like]
jakarta.apache.org/

Webserver Stress Tool
A HTTP-client/server load, stress and performance testing application designed to pinpoint critical issues in Web server that may prevent optimal performance. By Paessler GmbH. [Commercial, trial version]
www.paessler.com/

LoadDriver
An Internet Explorer based, integrated load and functional test software that tests web sites with JavaScript, Java applets, Flash and ActiveX objects. By Inforsolution. [Commercial]
inforsolution.com/

The Grinder
A Java load-testing framework. It has support for testing HTTP based services and can also be used to test MOM and POP3, SMTP, FTP, and LDAP applications. [Open Source, BSD-style license]
grinder.sourceforge.net/

PureLoad
A Java-based performance testing and analyzing tool that helps application developers by automating the process of stress testing their server applications. This is achieved by simulating several hundreds of users performing tasks. Statistics are used to analyze the bottlenecks in the system, primarily the performance, scalability and quality characteristics.
www.minq.se/

Tevron
Offers automated testing solutions for Windows platforms and focuses on load testing, application monitoring and functional testing for various enterprise applications. [Commercial]
www.tevron.com/

Compuware PointForward
Load testing service that measures the reliability, integrity, scalability and performance of web sites using a global infrastructure.
www.compuware.com/