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FusionAuth

Identity and Access Management (IAM)

Open Source
Free Tier
Paid Plans
E
Enterprise
Self-hosted
OpenMSP Score
46
23
Reddit Impact Score
Github Score
351K
241Stars
76Forks
730Commits
Oct 6, 2026Last commit

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Commercial Alternatives

Okta
Okta
Azure Active Directory
Azure Active Directory
Huntress
Huntress
Duo Security
Duo Security
FusionAuth is an authentication and authorization platform that provides user management, single sign-on, and multi-factor authentication. It offers flexible deployment options, comprehensive API, and advanced security features with a focus on developer experience.
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Key Features

Developer-First Design

Built specifically for developers with comprehensive APIs, SDKs for multiple languages, and extensive documentation for rapid integration

Flexible Deployment Options

Self-hosted or cloud-hosted options with identical features, allowing organizations to choose based on their security and compliance requirements

Complete Authentication Suite

Full range of authentication methods including passwords, passwordless, MFA, SSO, social login, and modern standards like WebAuthn

Advanced User Management

Comprehensive user lifecycle management with custom user data, groups, roles, and fine-grained permissions

Pros and Cons

Pros

Developer Experience

Excellent developer experience with comprehensive APIs, SDKs, and documentation making integration straightforward

Deployment Flexibility

Choice between self-hosted and cloud deployment with feature parity, avoiding vendor lock-in

Free Community Edition

Generous free tier with unlimited users and core features, suitable for many production use cases

Standards Compliance

Full support for OAuth 2.0, OIDC, SAML, and other modern authentication standards

Cons

Limited Multi-tenancy

Multi-tenancy features are basic compared to enterprise IAM solutions, requiring additional configuration

Configuration Management

CI/CD-based configuration management is less mature than some competitors, requiring manual processes

Feature Comparison

Comments

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Frequently Asked Questions

Getting Started

OpenMSP is The MSP Knowledge Hub & Community Platform designed specifically for Managed Service Providers seeking to optimize their technology stack, reduce vendor costs, and discover open-source alternatives. We combine a comprehensive vendor directory, open-source solution catalog, and integrated community discussions to help MSPs make informed decisions.
Yes, completely free. Browse vendors and tools, read comparisons, and join community discussions - no cost, no registration required. OpenMSP is community-supported and focused on empowering MSPs to reduce costs and improve operational efficiency through open-source technology.
We help MSPs identify cost-effective alternatives to expensive commercial solutions, provide transparent vendor information, and connect you with proven open-source alternatives. Our platform enables MSPs to make informed decisions about their technology investments.
No account required for browsing vendors, reading comparisons, or accessing community content. Creating a free account with SSO (Microsoft, Google, or Slack) allows you to participate in discussions and save your favorite tools.

Platform Information

OpenMSP is currently community-supported. We focus on providing value to the MSP community first. Any future monetization will keep the core platform free for MSPs while maintaining our independence and commitment to unbiased information.
We focus exclusively on MSP needs with transparent vendor information and open-source alternatives. No vendor partnerships or sponsored listings - just honest, community-driven information to help MSPs make better technology decisions. Our biggest value is our community where MSPs help each other with questions, setup guidance, and sharing real-world experiences.
Our community of MSP professionals helps verify and update information. We also maintain direct research on tools and vendors to ensure accuracy. Community members can report outdated information, and we work to keep everything current.
OpenMSP was founded by Michael Assraf, who has extensive experience in the MSP industry and product leadership. As the former CEO & Founder of Vicarius, Michael grew a startup from $0 to $9M ARR with 500+ customers and deep experience working with MSPs, partners, and fundraising. OpenMSP represents his commitment to empowering the MSP community through better technology decisions and cost optimization.

Open-Source Tools & Alternatives

We assess tools based on active development, community size, documentation quality, production deployments by MSPs, and available support options. Tools must meet strict criteria for reliability and enterprise readiness.
Many open-source projects offer multiple support options including community forums, commercial support from vendors, professional services, and our community discussions where experienced MSPs share implementation guidance.