Best Authentication Software in 2026

FusionAuth

It suits teams managing end-user identity at scale that need authentication and authorization across applications.

Google Cloud Identity

Cloud Identity suits organizations that need centralized user and group management, app SSO, device controls, and automated provisioning.

authentik

The open-source edition is described for homelab users and simple use cases.

Clerk suits application teams seeking authentication and user management with prebuilt components, APIs, and organization support.

Descope

Descope suits developers building customer or business applications that need authentication, user management and authorization.

It suits SaaS teams building enterprise-facing software that need identity, provisioning, administration, or authentication components.

It is for people whose employer, bank, healthcare organization, or another organization uses Identity Enterprise.

Frontegg

Frontegg suits developers and product teams adding customer identity to applications, particularly B2B products with tenant-level policies.

It suits teams building consumer apps, SaaS products or enterprise applications needing authentication and authorization.

MojoAuth

MojoAuth suits teams building consumer apps that need customer sign-in across web and mobile, especially those moving users away from passwords.

Okta Customer Identity Cloud

Auth0 suits organizations that need authentication and access controls for applications, including single sign-on, passwordless options, or machine-to-machine access.

Supabase

Supabase suits developers and teams building backends around Postgres who need authentication, storage, realtime features, or server-side functions.

Stytch suits developers building applications that need authentication, organization access controls, fraud protection or identity services for integrations.