Brook is a cross-platform strong encryption and not detectable proxy
Authentication and access-control framework
Zero-config tool to make locally trusted development certificates
Image of OpenWrt OS, with snort community featured in.
Network Pivoting Toolkit
Whonix is an Anonymous Operating System.
iOS firmware tools
Linux, Windows and Apple Mac File Hashing GUI Tool
a deliberately vulnerable Web application
Hypervisor R&D for recent x86 with support for DRTM + 2D paging
Multithreaded Proxy Enumeration Utility
Pentest virtual machine