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Best open source Auth & Security projects of 2026

The 25 most popular open source Auth & Security projects, ranked by GitHub stars in 2026. Updated daily.

UPDATED · May 21, 2026

// AUTH & SECURITY№ 001
Joplin

Joplin

★ FEATUREDTYPESCRIPT

A free, cross-platform note-taking and to-do application with end-to-end encryption for seamless organization and productivity.

★ STARS

54.7k

⑂ FORKS

6.1k

OPEN PROJECT
// AUTH & SECURITY№ 002
Hyperswitch

Hyperswitch

★ FEATUREDRUST

A unified payment infrastructure that connects multiple payment processors through a single API integration, enabling global payment processing

★ STARS

42.6k

⑂ FORKS

4.6k

OPEN PROJECT
// AUTH & SECURITY№ 003
Spacedrive

Spacedrive

★ FEATUREDRUST

A cross-platform file manager that unifies your devices into a seamless, organized digital workspace.

★ STARS

38.0k

⑂ FORKS

1.3k

OPEN PROJECT
// AUTH & SECURITY№ 004
Vault

Vault

GO

A tool for secrets management, encryption as a service, and privileged access management

★ STARS

35.6k

⑂ FORKS

4.7k

OPEN PROJECT
// AUTH & SECURITY№ 005
Nextcloud

Nextcloud

★ FEATUREDPHP

Nextcloud offers on-premises file sync, sharing and collaboration platform with advanced security and privacy features.

★ STARS

34.8k

⑂ FORKS

4.8k

OPEN PROJECT
// AUTH & SECURITY№ 006
Keycloak

Keycloak

JAVA

Open Source Identity and Access Management For Modern Applications and Services

★ STARS

34.3k

⑂ FORKS

8.3k

OPEN PROJECT
// AUTH & SECURITY№ 007
Tailscale

Tailscale

★ FEATUREDGO

Deploy a modern WireGuard-based VPN with zero configuration. Connect devices securely across clouds, VPCs, and on-premises networks without firewall rules.

★ STARS

31.3k

⑂ FORKS

2.5k

OPEN PROJECT
// AUTH & SECURITY№ 008
Ntfy

Ntfy

★ FEATUREDGO

A lightweight, open-source solution for sending real-time notifications to your devices, with end-to-end encryption and no sign-up required.

★ STARS

30.1k

⑂ FORKS

1.3k

OPEN PROJECT
// AUTH & SECURITY№ 009
Signal

Signal

KOTLIN

Secure messaging app with state-of-the-art encryption, voice/video calls, group chats, and file sharing. No ads, trackers, or data collection.

★ STARS

28.8k

⑂ FORKS

6.7k

OPEN PROJECT
// AUTH & SECURITY№ 010
ProjectDiscovery

ProjectDiscovery

GO

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

★ STARS

28.3k

⑂ FORKS

3.4k

OPEN PROJECT
// AUTH & SECURITY№ 011
Better Auth

Better Auth

TYPESCRIPT

The authentication framework for TypeScript

★ STARS

28.2k

⑂ FORKS

2.5k

OPEN PROJECT
// AUTH & SECURITY№ 012
Authelia

Authelia

GO

The Single Sign-On Multi-Factor portal for web apps

★ STARS

27.7k

⑂ FORKS

1.1k

OPEN PROJECT
// AUTH & SECURITY№ 013
KeePassXC

KeePassXC

C++

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

★ STARS

27.0k

⑂ FORKS

1.8k

OPEN PROJECT
// AUTH & SECURITY№ 014
Infisical

Infisical

★ FEATUREDTYPESCRIPT

Open-source secret management platform

★ STARS

26.7k

⑂ FORKS

1.9k

OPEN PROJECT
// AUTH & SECURITY№ 015
Ente

Ente

DART

End-to-end encrypted cloud storage for photos and videos, offering privacy, security, and seamless cross-device syncing.

★ STARS

26.3k

⑂ FORKS

1.6k

OPEN PROJECT
// AUTH & SECURITY№ 016
Netbird

Netbird

GO

Open source platform combining WireGuard overlay networks with Zero Trust access controls. Features SSO, MFA, device posture checks, and granular policies for secure remote connectivity.

★ STARS

25.1k

⑂ FORKS

1.3k

OPEN PROJECT
// AUTH & SECURITY№ 017
Authentik

Authentik

PYTHON

The authentication glue you need

★ STARS

21.4k

⑂ FORKS

1.6k

OPEN PROJECT
// AUTH & SECURITY№ 018
Wekan

Wekan

JAVASCRIPT

Open-source Kanban board solution offering visual task management, self-hosting capabilities, and robust security features for teams and individuals.

★ STARS

20.9k

⑂ FORKS

3.0k

OPEN PROJECT
// AUTH & SECURITY№ 019
Teleport

Teleport

GO

The easiest, and most secure way to access and protect all your infrastructure

★ STARS

20.3k

⑂ FORKS

1.8k

OPEN PROJECT
// AUTH & SECURITY№ 020
Ory Hydra

Ory Hydra

GO

OpenID Certified™ OpenID Connect and OAuth Provider written in Go

★ STARS

17.1k

⑂ FORKS

1.5k

OPEN PROJECT
// AUTH & SECURITY№ 021
OpenProject

OpenProject

RUBY

Powerful classic, agile or hybrid project management software with a focus on data privacy and security

★ STARS

15.0k

⑂ FORKS

3.2k

OPEN PROJECT
// AUTH & SECURITY№ 022
Filestash

Filestash

GO

Filestash is an open-source file manager that integrates with multiple storage backends, authentication systems, and offers customization options.

★ STARS

14.2k

⑂ FORKS

979

OPEN PROJECT
// AUTH & SECURITY№ 023
Notesnook

Notesnook

TYPESCRIPT

End-to-end encrypted note-taking app with cross-platform sync, rich text editing, and offline support for ultimate privacy and productivity.

★ STARS

14.0k

⑂ FORKS

945

OPEN PROJECT
// AUTH & SECURITY№ 024
OpenVPN

OpenVPN

C

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.

★ STARS

13.8k

⑂ FORKS

3.3k

OPEN PROJECT
// AUTH & SECURITY№ 025
Zitadel

Zitadel

GO

ZITADEL provides a comprehensive identity management solution with easy APIs, customizable workflows, and serverless deployment options.

★ STARS

13.7k

⑂ FORKS

1.1k

OPEN PROJECT