Zeek is a powerful network analysis framework
Loads environment variables automatically
A static analysis security vulnerability scanner for Ruby on Rails app
GRR Rapid Response, remote live forensics for incident response
Server for security audits supporting public key authentication
AWStats Log Analyzer
Code security review tool for C/C++, C#, VB, PHP, Java, PL/SQL, COBOL.
The PE file analysis toolkit
A simple keylogger for Windows, Linux and Mac
Open-Source intelligence tracking and analysis tool.
Snare Enterprise: bit.ly/Snare-Trial
Chords is binary file strings extractor, with many formats supported.
Cuckoo Sandbox is for automated analysis of malware
An advanced cross platform fuzzing framework suited to find code bugs.
Analizes PCAP files and gives statistics about IP packets.
360-FAAR Analyze FW1 Cisco Netscreen Policy Offline Using Config/Logs
Free Static Code Analysis Tool for PHP Applications
A Framework for Comparing Password Guessing Strategies
Open Source SIEM
A Collection of Useful Java/Swing Code
Tool to detect and correct vulnerabilities in PHP web applications
Virtual Appliance of RadicalSpam
Visualization of random generators
Capture newly created files in Windows filesystems