SQL operating system instrumentation and monitoring framework
Zeek is a powerful network analysis framework
Tool kit for building highly secure special-purpose operating systems
Application Restrictor Tool For Windows
Java SSH API
An advanced cross platform fuzzing framework suited to find code bugs.
Another C++ Hack
Open Source Penetration Testing / Ethical Hacking Framework
Online Multi-Engine Antivirus Scanner
Free and Open Source Browser based Security Framework
secure multiparty computation done right