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
Language
License
Firezone
Networking · Security
Enterprise-grade zero-trust access platform built on WireGuard® that replaces legacy VPNs with peer-to-peer, identity-aware secure tunnels.
Hanko
Authentication · Security
Open source, self-hostable authentication platform with passkeys, SAML SSO, and OAuth — the privacy-first alternative to Auth0 and Clerk.
Dokploy
Devops · Hosting Control Panel · Security
Self-hosted PaaS that deploys apps and databases on your own VPS using Docker, Traefik, and multi-build-system orchestration
SpiceDB
Authentication · Databases · Security
An open source, Google Zanzibar-inspired authorization database that models permissions as relationships and evaluates fine-grained access checks at massive scale with single-digit millisecond latency.
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.
Cryptgeon
File Storage · Security
Self-destructing encrypted notes and files that vanish after viewing — the server never sees your keys.
KeePassXC
Security
A cross-platform, offline password manager with YubiKey, passkey, browser integration, and TOTP — all encrypted locally in the open KDBX format.
Maltrail
Monitoring · Security
Detect malicious network traffic using 47+ live threat feeds, heuristics, and a fat-client reporting dashboard — no commercial stack required.
OSV.dev
Security
Google's open-source vulnerability database that maps CVEs to exact package versions across 50+ ecosystems with a public API and data dumps.
Probo
Automation · Security
Open-source GRC platform for engineering and security teams.
SafeLine
Security
Self-hosted WAF with a custom semantic detection engine and ML-powered threat analysis that blocks web attacks without cloud dependency.
DefGuard
Authentication · Networking · Security
Self-hosted secure remote access that unifies WireGuard VPN, identity management, and connection-level MFA in one open-source platform.
hoop
Monitoring · Security
A wire-protocol gateway that enforces data masking, command blocking, approval workflows, and full session recording for engineers and AI agents accessing production infrastructure.
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.
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.
