Free Alternative Authenticate, onboard, verify, and charge unlimited users of any platform at no cost.

Frontegg is described as 'Developer platform that enables product-led-growth through a customer-facing user-management interface embedded seamlessly within any product' and is an app. There are more than 25 alternatives to Frontegg for a variety of platforms, including Web-based, SaaS, Self-Hosted, Docker and Amazon Web Services apps. The best Frontegg alternative is Keycloak, which is both free and Open Source. Other great apps like Frontegg are Authelia, AuthKit, Hanko and Kanidm.
Free Alternative Authenticate, onboard, verify, and charge unlimited users of any platform at no cost.

Access & Subscriptions made easy Bring Access and Subscription Management together in one simple, secure solution. Save time, strengthen security, and make your SaaS operations scalable.




The authentication platform that helps you secure your apps with branded login pages and your choice of identity methods.

Tesseral is the only open source auth provider focused exclusively on serving B2B SaaS. With just a few simple lines of code, any developer can launch an elegant login page with support for common authentication factors like passwords, magic links, and social login (e.g.

A simple and cost-effective way to provide secure, policy-compliant and user-friendly on-premises two-factor authentication solution with self-enrollment.

Cryptr is a plug-and-play B2B authentication platform that allows SaaS to manage and deploy all their authentication strategies like Single Sign On, automated user provisioning with Directory Sync, TOTP, magic link and much more with just a few lines of code.

Corbado is the passkey intelligence platform for enterprise CIAM teams. See why passkey adoption is flat, what's breaking logins, and how to scale passkeys to millions.



With the extensions of Keycloak+, enterprise requirements are fullfilled like: Delegated Administration, management of permissions in organizational structures, SCIM 2 provisioning, User Life Cycle / Housekeeping, GDPR/data protection/Audit and many more IAM features, for...
CentralAuth is an authentication service that provides user login functionality for web applications. The platform implements security protocols and authentication flows, allowing development teams to integrate user authentication without building these systems internally.

Phase Two builds on top of Keycloak, one of the most widely used open source identity and access management systems in the world. Our extensions bring multi-tenancy, audit logging, a self-service admin portal, and more to enhance Keycloak for SaaS and on-premise use cases.


One login, unlimited secure access to every application. miniOrange’s enterprise SSO solution centralizes identity, strengthens security, and eliminates password sprawl across your organization.

Identity solution supporting passwordless, biometrics, social logins, enterprise SSO, and multi-factor authentication. Offers customizable flows, admin portal, audit logging, brute-force protection, compliance, APIs, SDKs, cloud and self-hosted options for web and mobile.


