Metasploit Framework
Framework for Man-In-The-Middle attacks
Web Application Security Scanner Framework
Python Framework for Multipurpose Server
Distributed Network emulation tool for high rate packet
Open Source API-centric PHP Micro-framework
Behavior-Based Robotics framework
Cross-platform C++ libraries with a network/internet focus.
MVC2 based HTML 5 enabled Web Application Framework
Built free and powerfull web application with ExtJS and PHP