Authentication & Identity Management (IAM)

IN

Infisical

4.7/5.01 verified review

Freemium

Modern identity security platform for developers, machines, and AI agents.

• Open-source and transparent alternative to HashiCorp Vault.
• Full self-hosting capabilities for private infrastructure.
• Comprehensive ecosystem including CLI, SDKs, and Kubernetes operator.

30.2kstars on GitHub

CL

Cloudflare

4.7/5.01 verified review

Freemium

Global cloud connectivity platform providing security, CDN, and serverless compute.

• Massive global edge network spanning 335+ cities to reduce end-user latency.
• Advanced built-in DDoS mitigation and WAF protection right out of the box.
• Serverless compute via Workers distributed globally at the network edge.

TW

Twingate

4.6/5.01 verified review

Freemium

Identity-based Zero Trust network access platform to replace legacy VPNs.

• Rapid deployment without requiring modifications to existing network architecture.
• Granular identity-based access control at the individual resource level.
• Superior performance compared to traditional VPNs by avoiding traffic backhauling.

WO

WorkOS

4.6/5.01 verified review

Freemium

Developer APIs and SDKs to make SaaS applications enterprise ready.

• Rapid integration of SAML and OIDC protocols via modern SDKs.
• Native support for SCIM directory synchronization.
• Generous free tier for basic authentication.

SU

Supabase

4.6/5.01 verified review

Freemium·Open Source·Apache-2.0

Open source Firebase alternative providing a full Postgres database, authentication, and instant APIs.

• Full Postgres database access with complete SQL capabilities and extensions.
• Auto-generated instant REST and realtime APIs based directly on the schema.
• Open source architecture allowing complete self-hosting without lock-in.

114.1kstars on GitHub

FU

FusionAuth

4.6/5.01 verified review

Freemium

API-driven CIAM platform with flexible deployment and total control

• Fully API-driven architecture for custom automation and workflows
• Self-hosted Docker container deployment for air-gapped environments
• Native support for modern authentication standards including passkeys

CL

Clerk

4.5/5.01 verified review

Freemium

Comprehensive user authentication and management platform for modern web and mobile applications.

• Prebuilt UI components that reduce weeks of front-end development time.
• Advanced native support for multi-tenancy and enterprise organizations.
• Optimized SDKs for modern frameworks such as Next.js, Remix, and React.

SC

Scalekit

4.5/5.01 verified review

Freemium

MCP gateway and delegated auth for AI agents with 600+ connectors.

• Per-user delegated OAuth access instead of shared service accounts.
• Unified MCP gateway providing access to over 600 pre-built connectors.
• Granular permission controls and audit logs for every tool call.

KI

Kinde

4.5/5.01 verified review

Freemium·Open Source·MIT

Integrated authentication, user management, and billing platform for SaaS.

• Native integration between authentication and billing.
• Extensive ecosystem of SDKs for common frameworks.
• Built-in customer portal and user management dashboard.

19stars on GitHub

DE

Descope

4.5/5.01 verified review

Freemium·Open Source·MIT

Visual CIAM platform for users, B2B business customers, and AI agents.

• Visual workflow orchestration via drag-and-drop builders and extensible SDKs.
• Native support for complex identities including users, B2B tenants, and AI agents.
• Rapid implementation of passwordless authentication and SAML/OIDC connectors.

72stars on GitHub

RO

Rocket.Chat

4.5/5.01 verified review

Freemium

Sovereign and collaborative communication platform with flexible deployment and Matrix federation.

• Full support for on-premises and air-gapped deployments.
• Native federation based on open protocols like Matrix and XMPP.
• High level of control over data sovereignty and regulatory compliance.

46.3kstars on GitHub

ST

Stytch

4.5/5.01 verified review

Freemium·Open Source·MIT

API-first authentication and security platform for modern applications.

• Comprehensive APIs and SDKs for passwordless auth and passkeys
• Embeddable admin portal for enterprise customer self-service
• Native support for SAML SSO and SCIM provisioning

40stars on GitHub