Dos HTTP 2.5.1 Professional Edition

DoS HTTP is an easy to use and powerful HTTP Flood Denial of Service (DoS) Testing Tool for Windows. DoSHTTP includes URL Verification, HTTP Redirection, Port Designation, Performance Monitoring and Enhanced Reporting.


DoSHTTP uses multiple asynchronous sockets to perform an effective HTTP Flood. DoSHTTP can be used simultaneously on multiple clients to emulate a Distributed Denial of Service (DDoS) attack.

DoSHTTP can help IT Professionals test web server performance and evaluate web server protection software. DoSHTTP was developed by certified IT Security and Software Development professionals.

My personal comment:
It's been used for testing your own site security in the first place. Still you can use it for you evil purposes.

Download here

Edited: Link updated!