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
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.
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.
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
Phase Console
Devops · Security
End-to-end encrypted secrets management for engineering teams — from local dev to Kubernetes production.
web-check
Developer Tools · Security
All-in-one OSINT dashboard that dissects any website's IP, SSL, DNS, headers, cookies, ports, trackers, and more in a single scan.
VoidAuth
Authentication · Security
Self-hosted SSO with OIDC, LDAP, passkeys, and proxy auth for your entire self-hosted stack
Bramble
Authentication · Password Manager · Security
Local-first, end-to-end encrypted password manager that syncs your vault directly between your own devices over a private peer-to-peer mesh — no server, no account, no cloud in the middle.
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.
ALTCHA
Security
A self-hosted, privacy-first CAPTCHA alternative that uses memory-hard proof-of-work to stop bots without cookies, tracking, or third-party APIs.
Superagent
AI Agents · Security
An open-source SDK that blocks prompt injections, redacts PII and secrets, scans repositories for AI-targeted attacks, and red-teams production agents.
Enclosed
Security
Send end-to-end encrypted notes and files where the server never sees your content — true zero-knowledge sharing.
Palmr.
File Storage · Security
Self-hosted, privacy-focused file sharing without limits
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.
