Unstack Pro

Hey guys,
I got tired of rebuilding register and login flows to perfection, adding support for orgs, teams, RBAC, and billing for every project so I perfected it once. Production-grade, multi-tenant, and ready for use.

What it is:
A complete SaaS starter built on Better-Auth v1.4 with org-level billing, permissions, SSO, and a clean UI. Built to save you 100+ hours and let you ship customer orgs in minutes instead of weeks.

What’s included

Authentication (Better-Auth v1.4)

- Email/password + OTP login
- Passkeys (WebAuthn) with device management
- 2FA + backup codes
- Email verification
- Password reset via OTP
- Session management & audit logging

Multi-Tenant Organization Architecture

- Org creation & settings
- Team management
- Member invites with roles
- Custom RBAC (granular permissions)
- SSO (OIDC ready, SAML in progress)
- Proper org-scoped billing via Polar.sh

The Stack

- Next.js 15 (App Router)
- Better-Auth v1.4 + plugins
- Works with any DB (MongoDB adapter used for Better Auth)
- 50+ components (shadcn + HeroUI)
- Full TypeScript
- Prod-ready structure
- Unopinionated usage - drag and drop the code into any app

Live Demo: https://www.unstack.pro/
Early Access: https://buy.polar.sh/polar_cl_Fv...

Early access: $129 (first 50 people).
Launch price: $299.99
One-time payment. Lifetime updates. Full source.

Built so you never have to waste weeks rebuilding auth pages again.

Congrats on the launch Ridhwan, this starter looks clean and very practical for SaaS teams. Upvoted. I am co founder of bestofweb .site and after your launch if you want more visibility you are welcome to join and introduce it to our founder community.

Update: Fixed a CORS issue with the demo as I bought the domain last second! If you tried earlier and got an error, it's working now! Sorry about that 🙏