XOIC is another foolproof DoS/DDoS attack launching tool (euphemistically called server stress testing tool) for Windows. It executes (D)DoS attacks to the target IP Address based on the port and protocol selected by user. Its developer claims that XOIC is more powerful than LOIC in many ways.

Nowadays, as many as 70 percent of websites have vulnerabilities that could lead to the theft of sensitive data of company (such as credit card information and customer info list). In particular, too many custom web applications are often not fully tested and contain a lot of undetected vulnerabilities, making them easily fall prey to hackers. There is no doubt that, the security of a website is very important, so as a website administrator, it is very necessary to conduct security penetration tests on their own servers.

Kali Linux (successor of BackTrack Linux) is a free and open-source Debian-based Linux distribution funded and maintained by Offensive Security from Switzerland. Users can boot and use this OS via hard disk, live CD or live USB anytime and anywhere. Almost all open-source tools used for digital forensics, penetration testing, ethical hacking and network security assessments are included. There is no need to prepare and maintain this Linux distribution (including gathering all those software and their dependencies) by yourself, or to install any software and save any files on Kali.