Stop Building Auth. Start Building Products.
Authentication done right, so you never have to build it again. Email/Password, OTP, Passkeys, 2FA, Enterprise SSO, Org Billing, and RBAC - all working out of the box.
I was tired of rebuilding auth for every project, so I spent 120 hours perfecting this one time to use in all my products, and you can too.
Optimized for minimal re-renders. Beautiful UI out of the box.
Everything You Need to Launch
Complete B2B SaaS starter with 120 hours of work already done
Complete Authentication
- • Email/Password + Email OTP
- • Passkeys (WebAuthn) with device management
- • 2FA with backup codes
- • Session management & audit logs
- • Profile settings with avatar uploads
- • HIBP password breach detection
Multi-Tenant B2B Features
- • Organization-scoped billing (not user-scoped)
- • Custom RBAC with granular permissions
- • Team management within orgs
- • Member invitations & role assignment
- • SSO configuration (OIDC/SAML ready)
- • Subscription management through Polar
Beautiful UI Components
- • 50+ pre-built components (HeroUI + ShadCN)
- • Optimized with React Hook Form (minimal re-renders)
- • Responsive design for all screen sizes
- • Dark mode by default
- • React Email templates included
- • Type-safe throughout
Developer Experience
- • Next.js 15 (App Router + Server Actions)
- • Better-Auth v1.4 fully configured
- • MongoDB with type-safe schemas
- • Upstash Redis for rate limiting
- • Zero configuration needed
- • Deploy in under 5 minutes
One-time payment. Lifetime updates. No recurring fees. Full source code access.
Using the most modern tools
Built with the best tools and services in the ecosystem
Better Auth
The most flexible authentication framework for TypeScript. Powers all auth flows with 10+ pre-configured plugins.
Polar.sh
Modern billing infrastructure for SaaS. Handles org-scoped subscriptions, checkouts, and billing portals seamlessly.
MongoDB
Flexible document database with type-safe adapters. Scales effortlessly for multi-tenant SaaS applications.
*MongoDB is only used with Better Auth, and can be swapped easily.
Upstash Redis
Serverless Redis for rate limiting and session management. Lightning-fast with zero maintenance.
Resend
Modern email API for developers. Powers all transactional emails with React Email templates.
HeroUI + ShadCN
Beautiful, accessible components. HeroUI for React Native-style APIs, ShadCN for radix-based primitives.
Build vs Buy
Building From Scratch
- • Research Better-Auth docs & setup
- • Build all auth flows & edge cases
- • Design & implement RBAC system
- • Wire up org-scoped billing correctly
- • Create 50+ UI components
- • Configure SSO providers
- • Debug permission leaks & race conditions
- • Test everything thoroughly
Estimated: 100-200+ hours
Depending on your experience with Better-Auth
Using Unstack Pro
- • Clone repository: 2 minutes
- • Configure environment: 10 minutes
- • Deploy to production: 15 minutes
- • Customize branding: 1 hour
- • Add your features: ∞
- • Everything else: Done ✓
Total: ~2 hours
One-time payment: $129
Save 200+ hours and focus on building what makes your product unique.
Clean, Organized Structure
Every file has its place. Easy to navigate and extend.
Authentication & Users
- →Login, Register, SSO flows
- →2FA with backup codes
- →Passkey management
- →Session & audit logs
- →Profile settings & avatars
- →Email verification flows
Organizations & Teams
- →Multi-org management
- →Team creation & roles
- →Member invitations
- →RBAC with custom roles
- →SSO configuration (OIDC/SAML)
- →Org billing & subscriptions
Components & Utils
- →50+ reusable components
- →Form controls & validation
- →React Email templates
- →Custom auth plugins
- →Utility functions & hooks
- →Type-safe schemas
100+ TypeScript files organized by feature • Zero configuration needed. View the file tree here
Auth Done Once, Done Right
Stop rebuilding authentication for every project. Beautiful components, optimized architecture, and every auth flow you'll ever need - all configured perfectly.
Launch Your SaaS in Days, Not Months
Stop rebuilding auth from scratch. Get beautiful, optimized components and focus on building what makes your product unique.
One-time payment. Lifetime updates. No subscriptions. Limited time offer.
Frequently Asked Questions
Everything you need to know about Unstack Pro