Discover the best open source security tools for vulnerability scanning, threat detection & access control. Protect your system with community-driven solutions.
Security
Privacy-first, self-hosted CAPTCHA alternative using Proof-of-Work
Authentication · Security
OpenID Certified SSO & MFA Portal for Reverse Proxies
Authentication · Ecommerce · Security
Open-source Identity Provider for SSO, SAML, OIDC, and Zero Trust
Security · Password Manager
Self-hosted, open-source password management backend with zero-knowledge encryption
Devops · Security
The web server with automatic HTTPS and zero configuration
Devops · Developer Tools · Security
Enterprise SSL Certificate Management with Multi-DNS & REST API
Security · Authentication
Secure, self-hosted home server with SmartShield, VPN, and app store
Security · File Storage
Self-destructing encrypted notes and files with client-side encryption
Authentication · Security
The only WireGuard® VPN with true protocol-level MFA and enterprise-grade access control
Security · Hosting Control Panel · Devops
Self-hosted PaaS for deploying apps and databases with Docker, Traefik, and Swarm
Team Chat · Security
Secure, decentralized messaging and collaboration on the Matrix open standard
Security · Authentication
Zero-trust access platform built on WireGuard®
Developer Tools · Security
Fast reverse proxy to expose local servers behind NAT/firewall to the internet
Authentication · Security
Open source alternative to Auth0, Clerk & WorkOS — passwordless, passkeys, SSO
File Storage · Security
Self-hosted, end-to-end encrypted cloud storage with browser-based decryption
Security · Monitoring
One gateway to govern access to databases, Kubernetes, SSH, and AI agents
Security · Developer Tools
Open-source secrets, certificates, and privileged access management on autopilot
Security
Open-source, cross-platform password manager with YubiKey and browser integration
Security · File Storage · Developer Tools
Fast, encrypted, deduplicated backups to any cloud or local storage
Security · Monitoring
Open source malicious traffic detection using real-time threat feeds and heuristics
Security
Open Source Zero Trust Networking with WireGuard® and SSO
Security · Monitoring · Analytics
AI-powered, zero-config observability with real-time per-second metrics
Automation · Security
Automate secure WireGuard networks from homelab to enterprise
Developer Tools · Security
Offline-first networking utilities for sysadmins with 100+ tools
Networking · Developer Tools · Security
Easy reverse proxy with free SSL for home networks
Note Taking · File Storage · Security
End-to-end encrypted, open-source note-taking for privacy-first users
Security · File Storage
Self-destructing links for secure one-time sharing of secrets
Security · Product Management · Analytics
Self-hosted session replay & product analytics for developers
Security
Open, precise, and distributed vulnerability database for open source
File Storage · Security
Self-hosted, privacy-focused file sharing without limits
Password Manager · Security
Open source, end-to-end encrypted password manager API for teams
Devops · Security · Authentication
Open source secrets management for dev teams — from dev to production
Security · Authentication
Privacy-first, self-hostable Proof-of-Work CAPTCHA for GDPR compliance
Developer Tools · Security · Monitoring
Local-first API Client & HTTP Interceptor — No Login, Git-Native, Mocks Included
Developer Tools · Security · File Storage
Self-hosted, open-source remote desktop alternative to TeamViewer
Security
Self-hosted WAF with ML-powered threat detection and dynamic code encryption
Security · Developer Tools · Monitoring
Developer-first error tracking and performance monitoring with AI-powered debugging
AI Assistants · Security · Social Media
Analyze 1000+ social media profiles with OSINT, OCR, and metadata extraction
Developer Tools · Devops · Security
All-in-one JAMStack deployment and infrastructure for full-stack JavaScript apps
Authentication · Security
Open-source Auth0 alternative with full data control and passwordless login
Security
Unified identity platform for secure access to infrastructure and AI agents
Security · Monitoring
Embed security inside your product — detect threats, fraud, and abuse in real time
Security · AI Assistants · Automation
AI-native security automation platform for teams
Devops · Security · Automation
The Cloud Native Application Proxy with Auto-Discovery
Security · Devops · Developer Tools
High-performance, open-source API gateway for REST, GraphQL, gRPC & TCP
Developer Tools · Monitoring · Security
Open-source feature flag platform for safe, controlled releases
Password Manager · Authentication · Security
Self-hosted Bitwarden-compatible password manager in Rust
Authentication · Security
Self-hosted SSO with OIDC, passkeys, and proxy auth for your apps
Security · Monitoring
All-in-one OSINT tool to analyze any website's security and infrastructure
Security software is a critical component of modern development and operations. These applications focus on identifying, preventing, and responding to security risks across a variety of platforms and environments. Core functionality often includes vulnerability scanning, threat detection, access control, encryption, and security monitoring. They provide layers of defense to safeguard sensitive information and maintain system integrity.
Typical use cases include protecting web applications from common attacks, securing cloud infrastructure, managing user authentication and authorization, detecting malicious activity within networks, and ensuring data privacy. Features commonly found in this category include intrusion detection systems (IDS), firewalls, secure code analysis tools, and compliance auditing capabilities. Effective security solutions allow teams to proactively identify weaknesses before they can be exploited, minimizing potential damage and downtime.
Investing in robust security practices is paramount for any organization handling data or operating online. Open source Security applications offer transparency, customizability, and community support – providing developers with greater control over their security posture. They help address compliance requirements, build trust with users, and protect valuable assets from evolving cyber threats. Regular security assessments, incident response planning tools, and secure communication protocols are key benefits.