Top Hacker Friendly OS

1. Kali Linux

Download : KaliLinux

Kali Linux is based upon Debian Linux, instead of Ubuntu and new streamlined repositories synchronize with the Debian repositories 4 times a day, constantly providing users with the latest package updates and security fixes available.

With more than 300 penetration testing tools, completely free, Open source, Vast wireless device support, GPG signed packages and repos, Multi-language, Completely customizable make this distribution one of the best available masterpiece of hacking community.

default root password is same “toor“.

2. BackTrack 5

Download : BackTrack5

Backtrack is a Linux OS designed for security professionals. Who deals with system and web application security and other fields such as forensics.

This operating system includes all the security assessments and features till date.This distro got it all,Slick Interface,Powerful yet latest tools,high compatibly large software library,tons of tutorial.

3. BugTraq

Download : BugTraq

BugTraq offers the most comprehensive distribution, optimal, stable and automatic security to date. Bugtraq is a distribution based on the 2.6.38 kernel has a wide range of penetration and forensic tools. Bugtraq can install from a Live DVD or USB drive, the distribution is customized to the last package, configured and updated the kernel and the kernel has been patched for better performance and to recognize a variety of hardware, including wireless injection patches pentesting other distributions do not recognize.

Some of the special features that you can appreciate are:

Administrative improvements of the system for better management of services.

Expanded the range of recognition for injection wireless drivers.

Tools perfectly configured, automated installation scripts and tools like Nessus, OpenVAS, Greenbone, Nod32, Hashcat, Avira, BitDefender, ClamAV, Avast, AVG, etc...

Unique Scripts from Bugtraq-Team (SVN updates tools, delete tracks, backdoors, Spyder-sql, etc.)

Stability and performance optimized: Enhanced performance flash and java and start purging unnecessary services. So that the user can use only the services you really want.

It has incorporated the creation of the user in the installation, which is created with all system configurations.

We are the distribution and Forensic Pentesting with more tools built and functional, well organized menu without repetition of the same to avoid overwhelming the user.

4. BlackBuntu

Download : BlackBuntu

Blackbuntu is distribution for penetration testing which was specially designed for security training students and practitioners of information security. It's currently being built using the xubuntu 12.04.This edition has a large software library and nearly 100000's tutorials flying on YouTube and other sites. Blackbuntu runs on almost any PC,new or old,because of its less requirements.The Main developer,Krit Kadnok says "It's created in our own time as a hobby."