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
Sentry
Analytics · Developer Tools · Monitoring
Developer-first error tracking and performance monitoring platform with AI-powered root-cause analysis across 20+ languages and frameworks.
Teleport
Authentication · Security
Zero-trust infrastructure access platform that replaces credentials and VPNs with short-lived certificates, SSO, and identity-aware proxies for SSH, Kubernetes, databases, RDP, and AI agents.
Bitwarden Server
Password Manager · Security
Self-hosted, open-source password management backend with zero-knowledge encryption and enterprise-grade identity services
Caddy
Devops · Security
The only web server that obtains and renews TLS certificates automatically, with HTTP/1-2-3 support and zero dependency on external runtimes.
Nginx Proxy Manager
Developer Tools · Networking · Security
Manage Nginx reverse proxies and free Let's Encrypt SSL through a beautiful web interface — no Nginx expertise required.
Traefik
Automation · Devops · Security
A cloud-native reverse proxy and load balancer that auto-configures itself from Docker, Kubernetes, and other orchestrators — zero manual routing required.
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.
NetBird
Security
Replace your VPN with a zero-trust WireGuard overlay network that auto-connects devices, enforces SSO and posture checks, and deploys in under 5 minutes.
Netmaker
Automation · Security
Automate secure WireGuard mesh networks from homelab to enterprise scale without manual configuration.
OnetimeSecret
Security
Generate self-destructing single-use links to share passwords and sensitive data without leaving traces in inboxes or chat logs.
Authelia
Authentication · Security
OpenID Certified SSO and MFA portal for securing self-hosted web applications behind reverse proxies.
Infisical
Devops · Security
The open-source platform for secrets, certificates, privileged access, and AI agent security — all in one self-hostable system.
Notesnook
File Storage · Note Taking · Security
End-to-end encrypted, open-source note-taking where your data stays yours — even from the server.
Passbolt API
Password Manager · Security
Self-hosted, end-to-end encrypted password manager API built for teams who demand full ownership of their credentials.
SuperTokens
Authentication · Security
Open-source authentication platform you self-host, giving you complete control over user data with zero vendor lock-in.
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.
