Browse free open source Security software and projects below. Use the toggles on the left to filter open source Security software by OS, license, language, programming language, and project status.
WinSCP is a free SFTP, SCP, S3, WebDAV, and FTP client for Windows.
An easy-to-use anti-spam email gateway
Anti-Spam SMTP Proxy Server implements multiple spam filters
The portable software collection
E-mails, subdomains and names
Connect to a Service Bus namespace and administer messaging entities
The first messaging platform operating without user identifiers
A network security analysis and monitoring toolkit Linux distribution.
An automated e-mail OSINT tool
Phishing Campaign Toolkit
AS2 1.1 server implementation in Java
Implementation of the EDIINT AS2 protocol (RFC 4130)
Windows tool to read SIM card information and content
PHP package built for Laravel 5.* & 6.* & 7.* & 8.* & 9.* & 10.*
Easy and fast file sharing from the command-line
The communications platform that puts data protection first
Browse on Tor/i2p, Anon p2p Chat / FileTx, Conf / Video VoIP
Keybase Go library, client, service, OS X, iOS, Android, Electron
PHP secure communications library
best open source discord spammer (token-webhook&more)