Unstack Pro – Complete SaaS Starter with Advanced Authentication and Multi-Tenant Support

Summary: Unstack Pro is a production-grade SaaS starter built on Better-Auth v1.4, offering org-level billing, permissions, SSO, and a clean UI. It streamlines authentication and multi-tenant management, enabling developers to deploy customer organizations quickly and reduce development time by over 100 hours.

What it does

It provides email/password, OTP, passkeys (WebAuthn), 2FA, session management, and audit logging for authentication. The platform supports multi-tenant organization architecture with org creation, team management, role-based access control, SSO (OIDC ready), and org-scoped billing via Polar.sh.

Who it's for

Developers building SaaS applications who need a ready-made, production-ready authentication and multi-tenant system to accelerate deployment.

Why it matters

It eliminates the need to repeatedly build complex auth flows and org management, saving significant development time and enabling faster customer onboarding.