The Social-Engineer Toolkit
Open-source penetration testing framework designed for social engineering.
The Social-Engineer Toolkit (SET) was created and written by Dave Kennedy, the founder of TrustedSec. It is an open-source Python-driven tool aimed at penetration testing around Social-Engineering.
It has been presented at large-scale conferences including Blackhat, DerbyCon, Defcon, and ShmooCon. With over two million downloads, it is the standard for social-engineering penetration tests and supported heavily within the security community.