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Open Source Projects tagged "Security"

A curated collection of the best open source projects tagged "Security". Each listing includes a website screenshot along with a detailed review of its features.

Continuous compliance automation for SOC 2, ISO 27001 & more
  • Stars

    Stars growing over the last 30 days336
  • Last commit

    5 hours ago
  • License

    Apache-2.0
Automates evidence collection, control tracking, and audit reporting across SOC 2, ISO 27001, NIST 800-53, GDPR, and 12+ other frameworks in one platform.

Open Source Alternative to:

Advanced vulnerability detection and management platform
  • Stars

    32,486
  • Last commit

    17 hours ago
  • License

    MIT
Monitor infrastructure for exploitable vulnerabilities with real-time detection, automated workflows, and zero false positives.

Open Source Alternative to:

Secure secret management for modern development teams
  • Stars

    30,179
  • Last commit

    4 hours ago
  • License

    MIT
End-to-end encrypted secret management platform for seamless integration and enhanced security in development workflows.

Open Source Alternative to:

Cross-platform, secure password manager
  • Stars

    29,631
  • Last commit

    3 days ago
  • License

    GPL-3.0
KeePassXC is an open-source password manager that securely stores and manages sensitive information across Windows, macOS, and Linux.

Open Source Alternative to:

Take control of your identity with a secure, flexible solution
  • Stars

    26,183
  • Last commit

    9 hours ago
  • License

    MIT
authentik is an open-source identity provider that offers self-hosted authentication, authorization, and user management for businesses of all sizes.

Open Source Alternative to:

Empower your digital strategy with actionable insights
  • Stars

    21,989
  • Last commit

    11 hours ago
  • License

    GPL-3.0
Comprehensive web analytics platform offering full data ownership, privacy protection, and customizable insights for data-driven decision making.

Open Source Alternative to:

Zero Trust VPN solutions for secure business networking
  • Stars

    14,747
  • Last commit

    12 hours ago
  • License

    Unknown
Secure remote access VPN solutions with zero trust network access. Self-hosted and cloud-managed options for businesses of all sizes. Trusted by 20,000+ organizations.

Open Source Alternative to:

Secure and streamline database changes with CI/CD automation
  • Stars

    14,661
  • Last commit

    6 hours ago
  • License

    MIT
Comprehensive platform for database schema migrations, security controls, and data masking with built-in review workflows and GitOps integration.
Client-side encryption for your cloud files
  • Stars

    16,389
  • Last commit

    13 hours ago
  • License

    GPL-3.0
Encrypts files and filenames locally before they reach Dropbox, Google Drive, OneDrive, or any other cloud, so only you hold the key.

Open Source Alternative to:

2FA token manager for Android with encrypted vault
  • Stars

    13,424
  • Last commit

    2 months ago
  • License

    GPL-3.0
Android app for managing two-factor authentication tokens with encrypted storage, biometric unlock, flexible backups, and import/export from major 2FA apps.

Open Source Alternative to:

Fast, flexible VPN replacement with zero-trust security
  • Stars

    9,148
  • Last commit

    3 hours ago
  • License

    Apache-2.0
Replace your VPN with zero-trust access built on WireGuard. Fast, scalable network security with simple policies and identity provider integration.

Open Source Alternative to:

Secure email, calendar and contacts with end-to-end encryption
  • Stars

    8,074
  • Last commit

    17 hours ago
  • License

    GPL-3.0
Tuta offers encrypted email, calendar and contacts with quantum-resistant security, protecting your privacy without ads or tracking.

Open Source Alternative to:

Self-hosted cloud platform with automated security
  • Stars

    6,190
  • Last commit

    10 days ago
  • License

    Unknown
Complete self-hosting solution with automated maintenance, Smart-Shield protection, anti-DDoS, SSO authentication, and VPN access for secure private cloud management.

Open Source Alternative to:

Clean your system and free disk space
  • Stars

    Stars growing over the last 30 days7,291
  • Last commit

    9 hours ago
  • License

    GPL-3.0
BleachBit frees disk space & protects privacy by deleting cache, cookies, history & temp files from Firefox, Chrome & more. Open source for Linux/Windows.

Open Source Alternative to:

Build scalable authorization in minutes, not months
  • Stars

    5,968
  • Last commit

    8 days ago
  • License

    AGPL-3.0
Open-source authorization service for implementing fine-grained access controls. Centralized, scalable solution supporting RBAC, ABAC and ReBAC with Google Zanzibar-inspired architecture.

Open Source Alternative to:

Secure password management for teams
  • Stars

    6,198
  • Last commit

    11 days ago
  • License

    AGPL-3.0
Open source password manager focused on security, collaboration and privacy for organizations

Open Source Alternative to:

Open source security automation platform for builders
  • Stars

    3,878
  • Last commit

    8 hours ago
  • License

    AGPL-3.0
Tracecat is a scalable, self-hostable platform for automating security workflows and playbooks without limits.

Open Source Alternative to:

Secure, policy-based access control for modern applications
  • Stars

    4,639
  • Last commit

    2 days ago
  • License

    Apache-2.0
A scalable authorization layer that provides fine-grained access control through externalized policies, enabling secure and flexible permissions management.

Open Source Alternative to:

Next-Gen CAPTCHA and Spam Protection, GDPR compliant
  • Stars

    2,861
  • Last commit

    9 days ago
  • License

    MIT
ALTCHA offers cutting-edge spam and abuse protection for websites and apps, with privacy-friendly CAPTCHA alternatives designed for GDPR compliance.

Open Source Alternative to:

Zero-Trust VPN with built-in 2FA/MFA and SSO capabilities
  • Stars

    2,892
  • Last commit

    17 hours ago
  • License

    Unknown
Enterprise-grade open source VPN solution combining WireGuard with mandatory 2FA/MFA and integrated OpenID Connect SSO for secure remote access

Open Source Alternative to:

Get audit-ready for SOC 2, ISO 27001, HIPAA, and GDPR
  • Stars

    2,070
  • Last commit

    2 days ago
  • License

    AGPL-3.0
AI-driven compliance platform that automates evidence collection, policy generation, and continuous monitoring across 580+ integrations for SOC 2, ISO 27001, HIPAA, and GDPR.

Open Source Alternative to:

Secure, private, and decentralized file storage
  • Stars

    2,545
  • Last commit

    12 hours ago
  • License

    AGPL-3.0
A peer-to-peer encrypted filesystem for secure file storage, sharing, and collaboration with end-to-end encryption and user-controlled data.

Open Source Alternative to:

Self-hosted password vault built for teams and compliance
  • Stars

    1,873
  • Last commit

    2 days ago
  • License

    GPL-3.0
Collaborative password manager with folder-level access control, AES-256-GCM encryption, governance tools, and Linux password rotation, runs on your own servers.

Open Source Alternative to:

The modern GraphQL runtime
  • Stars

    1,443
  • Last commit

    2 months ago
  • License

    Apache-2.0
Swiftly design and ship best-practice GraphQL backends atop existing data sources and APIs.

Open Source Alternative to:

Firefox fork hardened for privacy, security, and freedom
  • Stars

    1,357
  • Last commit

    14 hours ago
  • License

    Unknown
A Firefox-based browser that strips telemetry, blocks trackers, disables DRM, and ships with a content blocker out of the box.

Open Source Alternative to:

Secure secret management with public key encryption
  • Stars

    768
  • Last commit

    3 hours ago
  • License

    MIT
Secure secret management platform with public key encryption, automated rotation, versioning, and real-time collaboration tools for development teams.

Open Source Alternative to:

Secure, deploy, and manage application secrets effortlessly
  • Stars

    940
  • Last commit

    4 hours ago
  • License

    MIT
Open source platform for engineering teams to manage secrets and environment variables from development to production, with powerful integrations.

Open Source Alternative to:

Simplify project management for developers
  • Stars

    459
  • Last commit

    22 hours ago
  • License

    Apache-2.0
Shelve is a comprehensive project management tool designed to streamline workflows and enhance collaboration for developers and teams.

Open Source Alternative to:

Decentralized CAPTCHA for enhanced web security
  • Stars

    304
  • Last commit

    10 hours ago
  • License

    Apache-2.0
A blockchain-based CAPTCHA solution offering improved security, user experience, and resistance to bot attacks for web applications.

Open Source Alternative to:

GDPR-compliant bot protection without user friction
  • Stars

    199
  • Last commit

    5 hours ago
  • License

    Unknown
Privacy-first CAPTCHA service that blocks bots while keeping forms accessible. No puzzles, no tracking, no cookies - just invisible cryptographic protection.

Open Source Alternative to:

Self-hosted password manager built for business teams
  • Stars

    104
  • Last commit

    23 hours ago
  • License

    Apache-2.0
Team-focused password manager with client-side encryption, SAML, LDAP, audit logs, and compliance policies. Self-host on your own servers or use as SaaS.

Open Source Alternative to:

Secure, scalable server access management for DevOps
  • Stars

    169
  • Last commit

    3 months ago
  • License

    BUSL-1.1
Centralized platform for managing SSH access, enhancing security, and streamlining server administration for DevOps teams.

Open Source Alternative to:

Access control for AI agents your customers log in with
  • Stars

    21
  • Last commit

    9 days ago
  • License

    BUSL-1.1
Detects AI agents using customer credentials, masks private fields, holds risky actions for passkey approval, and signs every decision on your own server.

Open Source Alternative to:

Complete website health monitoring and security scanning
  • Stars

    16
  • Last commit

    5 months ago
  • License

    Unknown
Monitor website uptime, detect security vulnerabilities, find broken links, and simulate user flows. Get instant alerts when issues arise. Free tier available.

Open Source Alternative to: