Best Auth0 alternatives for 2026: Top 5 Tools Compared

Auth0 is a cloud-based Identity-as-a-Service (IDaaS) platform that provides authentication and authorization services for web and mobile applications.

While Auth0 offers robust features including SSO, MFA, social login, and API security, many teams look for alternatives due to escalating pricing structures, vendor lock-in concerns, customization limitations, and the need for greater infrastructure control. As organizations scale, Auth0's MAU-based pricing can become prohibitively expensive, especially when transitioning to Enterprise plans that often start around $30,000 annually.

Top Alternatives to Auth0

Here are five leading Auth0 alternatives that address different organizational needs and technical requirements:

1. FusionAuth

FusionAuth stands out as a developer-centric authentication platform designed for teams that need complete control over their identity infrastructure. Unlike Auth0's exclusively cloud-managed model, FusionAuth offers flexible deployment options, including self-hosted, private cloud, and managed SaaS solutions. The platform provides enterprise-grade authentication features without the complexity or vendor lock-in that often accompanies traditional IAM solutions.

Built with APIs at its core, FusionAuth enables developers to implement sophisticated authentication flows while maintaining full ownership of user data and infrastructure. The platform supports all modern authentication protocols, including OAuth2, OpenID Connect, and SAML, making it suitable for both B2B and B2C applications. FusionAuth's transparent pricing model and comprehensive documentation have made it particularly popular among growing technology companies.

What Does FusionAuth Do

FusionAuth provides complete user authentication and authorization services, including user registration, login flows, password management, multi-factor authentication, social login integrations, and fine-grained role-based access control for applications of any scale.

FusionAuth Differentiators

• Self-hosting capability - Deploy on your own infrastructure for complete data control
• Transparent pricing - Predictable costs without per-user fees or hidden charges
• Developer-first approach - Comprehensive APIs and SDKs with excellent documentation
• No vendor lock-in - Open APIs and data portability ensure migration flexibility.
• Flexible deployment - Choose between self-hosted, private cloud, or managed options

FusionAuth Pros

• Complete infrastructure and data ownership
• Excellent developer experience with robust documentation
• Cost-effective pricing that scales predictably
• Strong community support and active development
• Enterprise features are available in all deployment models

FusionAuth Pricing

• Community Edition: Free self-hosted version with core features
• Community (Basic Cloud): $75/month for hosted community features
• Developer (Self-Hosted): $125/month with basic support
• Developer (Basic Cloud): $200/month for hosted solution
• Premium (Self-Hosted): $500/month with advanced features
• Enterprise: Starting at $2,500/month for large-scale deployments with SLA guarantees

Note: Pricing varies significantly by deployment model (self-hosted vs. cloud) and high-availability options‍

2. Okta

Okta represents the enterprise-grade end of the identity management spectrum, offering a comprehensive Identity-as-a-Service platform that goes far beyond basic authentication. As the company that actually acquired Auth0 in 2021, Okta maintains both products as distinct offerings, with the core Okta platform focusing on enterprise workforce and customer identity needs. Okta excels in complex organizational environments requiring extensive integrations, advanced security policies, and regulatory compliance.

The platform provides thousands of pre-built integrations with SaaS applications, robust single sign-on capabilities, and sophisticated user lifecycle management. Okta's strength lies in its ability to handle complex enterprise requirements, including advanced MFA options, risk-based authentication, and detailed audit trails that satisfy the most stringent compliance requirements.

What Does Okta Do

Okta provides enterprise identity and access management, including SSO, MFA, user provisioning, lifecycle management, API access management, and customer identity solutions for large-scale organizations with complex security requirements.

Okta Differentiators

• Enterprise-grade scalability - Handles millions of users with guaranteed uptime SLAs
• Extensive integration catalog - Pre-built connectors for thousands of applications
• Advanced security features - Risk-based authentication, device trust, and threat detection
• Regulatory compliance - Built-in support for GDPR, HIPAA, SOX, and other frameworks
• Comprehensive IAM suite - Beyond authentication to full identity governance

Okta Pros

• Market-leading enterprise features and reliability
• An extensive ecosystem of integrations and partnerships
• Strong compliance and audit capabilities
• Advanced user lifecycle management
• Professional services and enterprise support options

How Okta Works with Siit

Okta integrates with Siit's business process orchestration platform to streamline identity and access management workflows. When teams use Okta for authentication and Siit for internal operations, access provisioning becomes automated end-to-end. For example, when an employee requests application access through Siit in Slack or Microsoft Teams, the approval process can automatically trigger user provisioning in Okta, sync permissions with connected systems like BambooHR or Workday, and update device management platforms like Jamf or Kandji—all without manual intervention.

Okta Pricing

• Workforce Identity: Starts at $6/user/month under Okta's new tiered Starter Suite
• Customer Identity: Starts at $35/month for B2C Essentials (500 MAUs)
• Privileged Access and Governance pricing requires contacting Okta sales
• Add-ons and actual costs depend on the contract and feature bundles

3. Keycloak

Keycloak stands as a premier open-source identity and access management solution, offering enterprise-grade features without licensing costs. Originally developed by Red Hat and now governed by the Cloud Native Computing Foundation (CNCF) with backing from a vibrant community, Keycloak provides complete control over authentication infrastructure while supporting all modern identity protocols. The platform excels in environments where data sovereignty, customization, and cost control are primary concerns.

Unlike proprietary solutions, Keycloak allows organizations to inspect, modify, and extend the source code to meet specific requirements. This flexibility makes it particularly attractive to regulated industries, government organizations, and companies with unique security requirements. The active open-source community continuously contributes features, security patches, and protocol implementations.

What Does Keycloak Do

Keycloak provides comprehensive identity and access management, including user authentication, authorization, social login, identity brokering, user federation with LDAP/Active Directory, and fine-grained security policies for web applications and REST services.

Keycloak Differentiators

• Complete open-source solution - Full access to source code with the main server under Apache 2.0 license
• Zero licensing costs - No per-user fees or commercial licensing restrictions
• Extensive customization - Modify core functionality and extend with custom providers
• Protocol support - Comprehensive OAuth2, OpenID Connect, SAML implementation
• Community-driven development - Active contributor base and transparent roadmap

Keycloak Pros

• No vendor lock-in with complete source code access
• Extensive customization and extension capabilities
• Strong community support and documentation
• Comprehensive protocol support and standards compliance
• Cost-effective for large user bases

Keycloak Pricing

• Community Edition: Free open-source version with community support
• Red Hat build of Keycloak: Not sold separately - only included as part of Red Hat Runtimes, Red Hat Application Foundations, and Red Hat OpenShift subscriptions
• Red Hat subscriptions: Priced based on CPU cores/system units (contact Red Hat for bundled subscription pricing)
• Self-hosted: Infrastructure costs only for self-managed deployments
• Managed services: Available from third-party providers with custom pricing
• Consulting services: Available from Red Hat and certified partners

Note: Organizations can use the free open-source version or opt for Red Hat's commercial support through bundled subscriptions

4. Microsoft Entra ID

Microsoft Entra ID (formerly Azure Active Directory) provides comprehensive identity and access management deeply integrated with the Microsoft ecosystem. For organizations already invested in Microsoft 365, Azure, or Windows infrastructure, Entra ID offers seamless identity services that extend from on-premises Active Directory to cloud applications. The platform excels in hybrid environments where traditional Windows-based identity must coexist with modern cloud services.

Entra ID's strength lies in its conditional access capabilities, which enable sophisticated security policies based on user behavior, device compliance, location, and risk factors. The platform provides extensive integration with Microsoft's security stack while also supporting third-party applications through standard protocols.

What Does Microsoft Entra ID Do

Microsoft Entra ID provides identity and access management, including single sign-on, multi-factor authentication, conditional access policies, privileged identity management, and identity protection for Microsoft and third-party applications in hybrid cloud environments.

Microsoft Entra ID Differentiators

• Microsoft ecosystem integration - Seamless integration with Office 365, Windows, and Azure
• Hybrid identity support - Bridge on-premises Active Directory with cloud services
• Advanced security features - Identity protection, conditional access, and risk detection
• Zero Trust architecture - Built-in support for modern security frameworks
• Compliance capabilities - Extensive audit trails and regulatory compliance tools

Microsoft Entra ID Pros

• Deep integration with Microsoft products and services
• Strong security features, including AI-powered threat detection
• Comprehensive hybrid cloud support
• Extensive compliance and audit capabilities
• Cost-effective for Microsoft ecosystem customers

How Microsoft Entra ID Works with Siit

Microsoft Entra ID integrates with Siit's business process orchestration platform to centralize identity management workflows across your Microsoft ecosystem and beyond. When teams use Entra ID for authentication and Siit for internal operations, access requests become fully automated. For example, when an employee requests access to Microsoft 365 applications through Siit in Slack or Microsoft Teams, the approval process can automatically provision user accounts in Microsoft Entra ID, sync employee data with HRIS systems like Workday or Rippling, configure device access through Microsoft Intune, and create tracking tickets in ServiceNow—all without manual intervention.

Microsoft Entra ID Pricing

• Free tier: Basic features included with Microsoft 365 subscriptions
• Premium P1: $6/user/month for advanced features and conditional access
• Premium P2: $9/user/month for identity protection and privileged access
• External Identities: Pay-per-use pricing for customer identity scenarios

5. LoginRadius

LoginRadius focuses on modern customer identity and access management with built-in support for emerging authentication standards like passkeys and FIDO2. The platform emphasizes developer experience while providing enterprise-grade security and scalability. LoginRadius differentiates itself through native support for passwordless authentication, comprehensive push MFA capabilities, and flexible deployment options that include private cloud implementations.

The platform's strength lies in its balance of advanced security features with developer-friendly APIs and documentation. LoginRadius provides extensive customization options without requiring complex configuration, making it suitable for organizations that need sophisticated authentication capabilities without the overhead of enterprise IAM complexity.

What Does LoginRadius Do

LoginRadius provides customer identity and access management, including passwordless authentication, social login, multi-factor authentication, user management, and security analytics for web and mobile applications with modern authentication standards support.

LoginRadius Differentiators

• Passkey and FIDO2 support - Native implementation of modern passwordless standards
• Push MFA integration - Built-in push notification multi-factor authentication.
• Developer-friendly design - Comprehensive APIs with excellent documentation
• Flexible deployment - Cloud, private cloud, and on-premises options available
• Modern security features - Advanced fraud detection and risk assessment

LoginRadius Pros

• Leading support for passkey and passwordless authentication
• Excellent developer experience and implementation speed
• Flexible deployment models for different organizational needs
• Strong security features with modern authentication methods
• Competitive pricing with transparent cost structure

LoginRadius Pricing

• Developer: Free tier available for development and testing
• Professional: Custom pricing for small to medium applications
• Enterprise: Custom pricing for large-scale deployments with advanced features and SLA requirements

Note: LoginRadius uses custom pricing based on monthly active users (MAUs), feature requirements, and specific configurations. Contact LoginRadius sales for detailed pricing quotes

Turn Identity Management Into Operational Intelligence

Choosing the right authentication platform solves secure access—but the real bottleneck is provisioning. When a new hire needs application access and permissions, your identity provider authenticates them. But someone still manually coordinates approval workflows, switches between admin consoles, updates group memberships across systems, and finally confirms access was granted.

Siit's AI-powered service desk bridges that gap. Our agentic AI connects your identity provider with the systems that actually execute access management—HRIS platforms (BambooHR, Rippling, Workday), device management tools (Jamf, Microsoft Intune, Kandji), and service management platforms (ServiceNow).

When an employee requests software access through Slack or Microsoft Teams, unified operational data powers AI that autonomously checks role requirements, routes approvals to the right stakeholders, provisions accounts in Okta or JumpCloud, syncs permissions across connected systems, and updates asset records—without manual handoffs. Access requests that took hours of coordination now resolve in minutes, while your team focuses on strategic security initiatives instead of routine provisioning.

Book a demo to see this in action.