HammerHead 2 - Web Testing Tool

Hammerhead 2 is a stress testing tool designed to test out your web server and web site. It can initiate multiple connections from IP aliases and simulated numerous (256+) users at any given time. The rate at which Hammerhead 2 attempts to pound your site is fully configurable, there are numerous other options for trying to create problems with a web site (so you can fix them). It can be used to test the behaviour of the port under load, or the ability of the port to service a set of requests.