Self validating controls
HTML reports can be generated during the load to view response times measurement, server CPU, etc. Loadster - Load testing tool from Brickyard Technologies, Inc.
oriented to testing websites, web applications, and HTTP web services; includes graphical script editor, live reporting, and unlimited virtual users.
in the LFAQ section; there are also articles about web site testing and management in the 'Resources' section. Free open source version supports the HTTP protocol, the $pro version supports binary protocols.
Go Replay - Performance testing tool that listens for traffic on production servers and feeds it to test and dev environments. Pro version supports replaying and keep-alive sessions to ensure that you get the exact same number of connections every time.
Enables users to stress test websites, web apps, and APIs using real browsersnot headless browsers or other emulators.Locust - Scalable user load testing tool written in Python.Locust is completely event-based, and therefore it's possible to support thousands of concurrent users on a single machine.The tool is useful in scenarios where the requests have high response times.Many existing tools are developed for scenarios with high request rate and quick response times, and fail to keep up with load generation when server response times are high, as the number of outstanding requests becomes very large .