What's the difference between "open source" and "source-available" here?

Open source means an OSI-approved license — MIT, Apache 2.0, GPL, and similar — so you can run, modify, and redistribute it freely. Source-available means the code is visible but under a license, like BSL or a custom "fair source" license, that restricts commercial use or redistribution. We label each listing with which one it actually is, since the distinction has real licensing consequences.

Is "open source" the same as "free"?

Not necessarily. The license is free to use in the sense that you can self-host at no licensing cost, but most projects here also sell a hosted or managed version, and self-hosting has its own real cost in infrastructure and maintenance time. Check each listing for what's actually free versus what's the paid tier.

How do you judge whether a project is actively maintained versus abandoned?

Recent commit activity, release cadence, and issue response time — not star count. A project with a large star count from years ago can be effectively dead, while a smaller, newer one might be actively maintained. Verify directly on the project's repository before depending on it.

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Open Source Identity & Access Management

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Showing 1–12 of 315

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Otphp

by Spomky-Labs

:closed_lock_with_key: A PHP library for generating one time passwords according to RFC 4226 (HOTP) and the RFC 6238 (TOTP)

Multi-Factor Authentication (MFA)IAM PlatformsOpen Source

AWS Mfa

by Brian Nuszkowski

Manage AWS MFA Security Credentials

Multi-Factor Authentication (MFA)IAM PlatformsOpen Source

privacyIDEA

by privacyIDEA

privacyIDEA: multifactor authentication management system

Multi-Factor Authentication (MFA)IAM PlatformsOpen Source

Ente

by Ente

End-to-end encrypted cloud for everything.

Multi-Factor Authentication (MFA)IAM PlatformsOpen Source

Keslr Connect

by Keslr

Connect your service to Keslr: sign in with Keslr and read the verification claim that proves a user is a real, vouched-for human — plus run services reachable only by Keslr members.

Identity VerificationIAM PlatformsOpen Source

Jit Groups

by Google Cloud Platform

JIT Groups is an open source application that lets you implement secure, self-service access management for Google Cloud using groups.

Identity & Access Management (IAM)IAM PlatformsOpen Source

Arkid

by 龙归科技

一账通是一款开源的统一身份认证授权管理解决方案，支持多种标准协议(LDAP, OAuth2, SAML, OpenID)，细粒度权限控制，完整的WEB管理功能，钉钉、企业微信集成等，QQ group: 167885406

Identity & Access Management (IAM)IAM PlatformsOpen Source

HiPermission

by Wey Ye

A simple and beautiful runtime permission library on Android.

AuthorisationAuthorization EnginesOpen Source

Hydra

by Ory

Internet-scale OpenID Certified™ OpenID Connect and OAuth2.1 provider that integrates with your user management through headless APIs. Solve OIDC/OAuth2 user cases over night. Consume as a service on Ory Network or self-host. Trusted by OpenAI and many others for scale and…

AuthorisationAuthorization EnginesOpen Source

Jbone

by Small

jbone基于Spring Cloud框架开发，旨在为中小企业提供稳定的微服务解决方案，为开发人员提供基础开发骨架，jbone包含微服务中所有常用组件，例如注册中心、服务管理、服务监控、JVM监控、内存分析、调用链跟踪、API网关等等。业务功能包括系统权限的统一管理、单点登录、CMS、电商平台、工作流平台、支付平台等等。

AuthorisationAuthorization EnginesOpen Source