Open Source Security Apps
Discover the best open source security tools for vulnerability scanning, threat detection & access control. Protect your system with community-driven solutions.
Apps in Security
Sentry
Analytics · Developer Tools · Monitoring
Developer-first error tracking and performance monitoring platform with AI-powered root-cause analysis across 20+ languages and frameworks.
authentik
Authentication · Security
The self-hosted Identity Provider that replaces Okta, Auth0, and Entra ID with a unified SSO platform supporting SAML, OAuth2/OIDC, LDAP, RADIUS, and WebAuthn.
Tracecat
AI Agents · Automation · Security
Open-source agentic security automation platform that runs AI agents and durable workflows at scale with sandboxed execution.
Vaultwarden
Password Manager · Security
Unofficial Bitwarden-compatible server in Rust — run the full Bitwarden ecosystem on a Raspberry Pi using every official client you already have, without the multi-container overhead.
Maltrail
Monitoring · Security
Detect malicious network traffic using 47+ live threat feeds, heuristics, and a fat-client reporting dashboard — no commercial stack required.
OpenSandbox
Developer Tools · Security
Secure, fast, and extensible sandbox runtime for AI agents with multi-language SDKs and Docker/Kubernetes runtimes.
DefGuard
Authentication · Networking · Security
Self-hosted secure remote access that unifies WireGuard VPN, identity management, and connection-level MFA in one open-source platform.
magika
Developer Tools · Security
AI-powered file type detection that identifies 200+ content types with ~99% accuracy in milliseconds using a compact deep learning model.
Shadowbroker
Analytics · Monitoring · Security
Self-hosted OSINT dashboard that fuses 60+ live intelligence feeds — flight tracking, ship AIS, satellites, CCTV, seismic and radio networks — into one real-time map, with an agent-ready command channel for AI co-analysts.
CertMate
Devops · Security
Automate SSL certificate lifecycle across any CA, 24+ DNS providers, and every major secret store — with a REST API, web dashboard, and built-in MCP server for AI-driven ops.
hoodik
File Storage · Security
Self-hosted, end-to-end encrypted cloud storage with browser-based encryption and S3-compatible storage support
Marble
Analytics · Security
The open-source, self-hostable fraud detection and AML compliance engine that gives fintechs full control over their detection rules, data, and investigations.
ST3GG
Developer Tools · Security
The ultimate open-source steganography suite — hide anything in any file using 100+ encoding techniques, detect it all, and run everything 100% in your browser.
About Security
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.
