Top 14 Best Free & Open-Source Identity Management Software Solutions Of 2025

Open source identity management software is a type of software that allows organizations to manage and control the digital identities of their users. It provides functionality such as user authentication, access control, and user provisioning.

Identity management is essential in today’s digital world, where organizations have to deal with a growing number of user accounts and access to various systems and applications. Managing these identities manually can be time-consuming and error-prone, which is why organizations rely on identity management software to automate and streamline the process.

Open source identity management software is software that is developed and distributed under an open source license. This means that the source code is freely available to anyone, and users are allowed to modify and distribute the software as they see fit. This open approach has several advantages, including cost savings, increased transparency, and the ability to customize the software to meet specific organizational needs.

One of the main benefits of using open source identity management software is cost savings. Since the software is freely available, organizations don’t have to pay licensing fees to use it. They can download the software for free and install it on their own infrastructure. Moreover, open source software also eliminates vendor lock-in, as organizations are not dependent on a specific vendor for support and updates.

Another advantage of open source identity management software is increased transparency. With the source code available for anyone to view and modify, organizations can ensure that the software meets their security and privacy requirements. They can review the code for vulnerabilities and make necessary changes to enhance security. Additionally, since the software is developed by a community of users, there is a wider pool of expertise available to address any security issues that may arise.

Open source identity management software also provides the ability to customize the software to meet specific organizational needs. Organizations can modify the source code to add or remove features, integrate with existing systems, or develop custom workflows. This flexibility allows organizations to tailor the software to their unique requirements and ensures that it aligns with their existing infrastructure and processes.

Open source identity management software is a cost-effective and flexible solution for organizations looking to manage and control the digital identities of their users. It provides functionality such as user authentication, access control, and user provisioning. By leveraging the benefits of open source software, organizations can save costs, increase transparency, and customize the software to meet their specific needs.

KEYCLOAK

Keycloak provides user federation, strong authentication, user management, fine-grained authorization, and more.

Single-Sign On
Identity Brokering and Social Login
User Federation
Admin Console
Account Management Console
Standard Protocols
Authorization Services

OPENIAM

OpenIAM provides an open source converged identity platform that integrates identity governance & administration (IGA), SSO and MFA into a single view.

Improve customer experience
Improve security by automating identity life cycle events
Gain visibility of each identity
Improve productivity with contractors
Simplify compliance activities
Lower total cost of ownership by modernizing your IAM infrastructure

ORY.SH

Ory is a certified and battle-tested identity solution backed by a large open source community and trusted by Fortune 500 companies.

Sign up more users
Make the switch to Ory
Trillion of requests, secured
Turn more visitors into trusting customers
Flexible identity and access management for apps and services
Compliance and Security built in

EVOLVEUM

Regain control over digital identity with midPoint, the leading open source identity management and governance platform.

Identity Governance and Administration
Addresing Regulations and Compliance
Privacy Enhancing Identity Management
User Self-Service

AEROBASE.IO

Aerobase is an open source Identity and access management (IAM) platform specializes in identity federation, SSO and strong & adaptive authentication.

Single Sign On
Social Logins
Centralized Management
Two-Factor Authentication
LDAP and Directory
Customizable drop-in UI
Identity & Access Management
Identity Brokering
Seamless Deployment

GLUU

Gluu has passed more OpenID self-certification tests than any other platform.

Provide a more decentralized and secure way to store your data
Eliminate the need for expensive, proprietary solutions
Improve agility with a flexible and scalable way to manage your data
Improve trust and confidence in your management systems

CASDOOR

Casdoor is an Open Source UI-first Identity Access Management (IAM) / Single-Sign-On (SSO) platform supporting OAuth 2.0, OIDC, SAML and CAS.

Easy to Use
Frontend Backend Separation
Supporting Multi-Language

MOSIP.IO

MOSIP Modular Open Source Identity Platform helps Governments and other user organizations implement a digital, foundational identity system in a cost effective way.

Modularity
Vendor Neutrality
Privacy & Security in Design
Use of Automation
Platform-Based
Performance
Cost-Effectiveness
Configurability and Customisability

OPENIDENTITYPLATFORM

Open Identity develop and support Single Sign-On, Access Management, Identity Management, User-Managed Access, Directory Services, and Identity Gateway, designed and built as a single, unified platform.

FREEIPA

FreeIPA – manage Linux users and client hosts in your realm from one central location with CLI, Web UI or RPC access. Enable Single Sign On authentication for all your systems, services and applications.

Integrated security information management solution combining Linux (Fedora)
Built on top of well known Open Source components and standard protocols
Strong focus on ease of management and automation
Full multi master replication for higher redundancy and scalability
Extensible management interfaces

SOFFID

Soffid is the Identity and Access Management Solution for Everyone, Everywhere.

Adaptive Multiplatform Authentication
Get More flexibility with Affordable Budget
Single, Simple & Intuitive
Improve Merged and Access Policies
Manage Innovation and Acquisition Agility
Reduce Costs and Increase Productivity
Reduce IT Friction
Collaborate with partners

FORMSFLOW.AI

Formsflow integrated open source identity management system, Keycloak, enables you to determine which members of your organization will have access to which specific actions.