A unique, multithreaded Slow DoS exploit against web servers that use vulnerable versions of thread-based web server software (Apache 1.x, Apache 2.x, httpd, etc.); and is effective against even some mitigation mechanisms such as poorly implemented reverse proxy servers.
Why do you think that https://github.com/Mr4FX/HULK is a good alternative to GETreqt-Multithreaded-Slow-DoS-Attack