Browse free open source Security software and projects for Windows below. Use the toggles on the left to filter open source Security software by OS, license, language, programming language, and project status.
A lightweight and easy-to-use password manager
An easy-to-use anti-spam email gateway
WinSCP is a free SFTP, SCP, S3, WebDAV, and FTP client for Windows.
Anti-Spam SMTP Proxy Server implements multiple spam filters
View and manage processes, services and more with this powerful tool.
Browser for using Tor on Windows, Mac OS X or Linux
An open-source x64/x32 debugger for windows.
View and manage processes, services and more with this powerful tool
Metasploitable is an intentionally vulnerable Linux virtual machine
A security tool to remove sensitive data from your Windows hard drive
WPS wireless protocol audit software for Windows
Open source disk encryption with strong security for the Paranoid
A Windows password cracker based on rainbow tables
A hard drive disk wipe and data clearing utility
Antivirus software with virus scanning and virus definition updates
A network stress testing application
A cross-platform network scanner that is fast and simple to use
PHP/MySQL web application
Dynamic instrumentation toolkit for developers
deletes junk files to free disk space and improve privacy
A secure socks5 proxy for Windows
A little tool to play with Windows security
SSL VPN Client for Windows (OpenVPN).