SSO Auth Bridges

Built-in user management

Supabase Auth is a PostgreSQL-native authentication and identity management service built on the open-source GoTrue engine. Designed for full-stack, mobile, and web developers building applications atop Postgres, it eliminates the need for separate identity infrastructure. Its key differentiator is seamless integration with PostgreSQL Row-Level Security (RLS), allowing authorization rules to be enforced directly in the database using signed JWTs.

Unified Platform for Identity, Access, & Devices

JumpCloud is a cloud-native directory, identity, access, and device-management platform for SMBs, mid-market organizations, MSPs, and distributed teams managing mixed Windows, macOS, Linux, iOS, and Android environments. Its key differentiator is consolidation: it combines directory services, SSO, MFA, RADIUS/LDAP, lifecycle management, and endpoint controls in one platform.

Prevent identity attacks and secure access to apps and resources.

Microsoft Entra ID is a cloud identity and access-management platform for workforce authentication, SSO, MFA, Conditional Access, hybrid identity, and governance. It is best suited to organizations using Microsoft 365, Azure, Windows, Intune, or Defender; its key differentiator is deep native integration across the Microsoft ecosystem.

Identity Without Constraints

FusionAuth is a full-featured CIAM and identity platform for engineering-led companies that need authentication, authorization, SSO, MFA, social login, passkeys, user management, and machine-to-machine identity. It is best suited to B2B SaaS, B2B2C, regulated, or infrastructure-conscious organizations, with deployment flexibility and a free self-hosted Community edition as its main differentiators.

Secure Identity for Employees, Customers, and AI

Okta is a cloud-based Identity and Access Management (IAM) and Customer Identity (CIAM via Auth0) platform that centralizes authentication, authorization, and lifecycle management for employees, customers, and non-human identities. Designed for IT administrators, security engineers, and developers, it delivers enterprise-wide Single Sign-On (SSO) and adaptive Multi-Factor Authentication (MFA). Its primary differentiator is the Okta Integration Network (OIN), offering thousands of pre-built integrations that decouple identity governance from single-vendor ecosystems.

The Identity Layer for Every SaaS Entry Point

Frontegg is a B2B SaaS identity and user-management platform covering authentication, SSO, MFA, authorization, multi-tenancy, provisioning, and self-service administration. It is aimed at SaaS engineering and product teams that want enterprise-grade identity features without building the surrounding UI and workflows themselves; its main differentiator is the combination of CIAM APIs with prebuilt customer-facing portals for organizations, users, roles, and security settings.

Secure AI agents, humans, and whatever comes next

Auth0 by Okta is an enterprise-grade authentication and authorization platform that secures applications, APIs, and AI agents. It provides pre-built identity infrastructure, SSO, MFA, and access control for developers and enterprise teams. Its key differentiator is a developer-first extensibility framework paired with dedicated identity tooling for autonomous AI agents via Token Vault and MCP server authentication.

More than authentication, Complete User Management

Clerk is a hosted authentication and user-management platform for developers building web and mobile applications, especially SaaS products that need organizations, roles, permissions, social login, and account management. Its key differentiator is developer velocity through prebuilt customizable UI components, framework SDKs, managed identity infrastructure, and B2B user-management features.

Your app, Enterprise Ready.

WorkOS is a developer platform that provides standardized APIs and hosted UI components (like AuthKit) to integrate enterprise features like SAML/OIDC SSO, SCIM directory sync, RBAC, and audit logs into B2B SaaS applications. It is designed for SaaS engineering teams seeking to satisfy corporate IT requirements quickly without building custom integrations for every identity provider. Its key differentiator is a self-service Admin Portal that allows enterprise IT admins to onboard and configure their own identity setups independently.

Modern auth and billing for engineers. The fully integrated developer platform.

Kinde is an all-in-one developer platform that merges authentication, multi-tenant organization access management, subscription billing, and feature flags into a single SDK. It is built for full-stack developers and SaaS teams who want to build, secure, and monetize products without stitching together separate auth and billing tools. Its key differentiator is combining identity, multi-tenancy, passkeys, feature flags, and monetization into a unified, developer-first architecture.

Reduce user friction, prevent account takeover, and get a 360° view of your customer and agentic identities with the Descope External IAM platform.

Descope is a customer identity and access management (CIAM) platform that enables developers to build and orchestrate authentication, authorization, and user journeys via visual drag-and-drop workflows and SDKs. Designed for B2B and B2C SaaS as well as AI agent ecosystems, its key differentiator is the no-code 'Descope Flows' canvas paired with native support for passwordless authentication and dedicated agentic IAM infrastructure.

Access without friction. Security without compromise.

OneLogin is a cloud identity and access management platform for organizations that need workforce SSO, MFA, user provisioning, directory integration, and centralized application access. It is best suited to mid-market and enterprise teams seeking broad identity integrations with a relatively straightforward user experience; its main differentiator is practical coverage across SSO, authentication, provisioning, and custom connectors.

Identity Security for the Digital Enterprise

Ping Identity is an enterprise identity and access-management platform covering workforce, customer, and partner identity, including SSO, MFA, federation, directory services, lifecycle management, authorization, governance, and orchestration. It is best suited to large organizations with complex hybrid environments; its key differentiator is the breadth and deployment flexibility of its PingOne cloud services and self-managed products.

One platform to secure every identity—for humans, machines, and AI.

SailPoint Identity Security Cloud is a mature, AI-powered enterprise IGA platform for managing identity access, governance, and compliance at scale. It targets large organizations with complex, regulated environments needing deep automation and visibility. Its key differentiator is comprehensive feature depth and adaptive AI capabilities across human, machine, and AI identities.

Auth Stack for AI Apps | Start Free

Scalekit is an identity and authorization platform for B2B SaaS and AI applications, combining SSO, SCIM, organizations, RBAC, MCP authentication, delegated OAuth, token vaulting, and agent tool authorization. It is best suited to engineering-led companies that need one identity layer for human users, organizations, AI agents, and connected tools; its key differentiator is this unified SaaS-plus-agent focus.

Open source identity and access management solution for single sign-on and authentication.

Keycloak is an open-source identity and access management (IAM) platform delivering single sign-on (SSO), user federation, and fine-grained authorization for modern cloud architectures. Built for DevOps engineers, software developers, and security architects, it allows teams to implement enterprise-grade identity controls without vendor lock-in. Its primary differentiator is offering complete feature parity with proprietary identity platforms at zero licensing cost regardless of user volume.

A better way to build auth

Stytch is a developer-first identity platform for consumer and B2B applications, covering authentication, authorization, SSO, MFA, passwordless login, fraud prevention, organizations, and machine-to-machine access. Its key differentiator is the combination of flexible APIs and SDKs with enterprise identity features, multi-tenant organization support, OAuth-based connected applications, and emerging support for AI-agent workflows.