Pricing and Availability
Like its predecessor, Kali Linux is completely free and always will be. Offensive Security is committed to supporting the open source community with the ongoing development of Kali Linux. The development tree and all sources are available for those who wish to tweak and rebuild packages. Kali Linux is available immediately for download from http://www.kali.org/downloads/.
About Offensive Security
Founded in 2007, Offensive Security was born out of the belief that the only way to achieve sound defensive security is through an offensive approach. The team is made up of security professionals with extensive experience of attacking systems to see how they respond. They share this information through trainings, free tools and publications. With the motto “Try Harder,” the Company’s trainings and certifications are well-respected and considered amongst the most rigorous available, creating a model adopted across the industry. In addition, the Exploit Database, Metasploit Unleashed and BackTrack Linux community projects are highly-regarded and used by security teams in governmental and commercial organizations across the world. For more information about Offensive Security, please visit www.offensive-security.com.