OSRFramework is a set of libraries to perform Open Source Intelligence tasks. They include references to a bunch of different applications related to username checking, DNS lookups, information leaks research, deep web search, regular expressions extraction, and many others. At the same time, by means of ad-hoc Maltego transforms, OSRFramework provides a way of making these queries graphically as well as several interfaces to interact with like OSRFConsole or a Web interface.
wifiphisher
Wifiphisher is an effective rogue Access Point tool downloaded by hundreds of Wi-Fi hackers everyday. It is free and open source software currently available for Linux.
Metasploit Framework
Metasploit is a penetration testing platform that enables you to find, exploit, and validate vulnerabilities.
SET
The Social-Engineer Toolkit is an open-source penetration testing framework designed for Social-Engineering. SET has a number of custom attack vectors that allow you to make a believable attack in a fraction of the time.
U3-Pwn
U3-Pwn is a tool designed to automate injecting executables to Sandisk smart usb devices with default U3 software install. This is performed by removing the original iso file from the device and creating a new iso with autorun features.
URLCrazy
Generate and test domain typos and variations to detect and perform typo squatting, URL hijacking, phishing, and corporate espionage.