Webserver Stress Tool simulates anywhere from a few users to several hundred users accessing a website via HTTP/HTTPS at the same time.
Based on a set of URLs or using a VBScript the software simulates independent users requesting webpages from that URL including images, frames etc.
Each user is simulated by a separate thread with its own session information (e.g. cookies are stored individually for each user). URLs can be parameterized for each user and the sequence of URLs can be varied.