After building 350+ SaaS products across six years, I've tried almost every tool, framework, and database combination imaginable. Today, I use the same four-tool stack for virtually every SaaS build. It's not trendy — it's proven.
Next.js — The Framework
Why not plain React? Why not Remix or SvelteKit? I've used all of them. Next.js wins for SaaS for three reasons:
- App Router + Server Components — render data on the server, ship less JavaScript to the client, faster load times
- Built-in API routes — your frontend and backend in one codebase, perfect for fast iteration
- SEO out of the box — server-side rendering means Google can read your marketing pages
The alternative is building a separate backend and a separate frontend. That's two codebases, two deployment pipelines, and twice the complexity. For a two-week MVP, that's not viable.
Supabase — The Database
Supabase is PostgreSQL with superpowers. You get a full relational database, plus:
- Row-level security — users can only see their own data, enforced at the database level
- Real-time subscriptions — push updates to clients without polling
- Built-in storage — upload files, images, and documents without a separate service
- Edge functions — run serverless functions close to your users
The free tier handles most early-stage SaaS products comfortably. You scale to paid plans only when you have the revenue to justify it.
Want This Stack Built for You?
I take 2 clients per month. If you're serious about building a $1M+ SaaS on Replit, let's talk now.
DM Me on Fiverr →Stripe — Billing and Payments
There is no viable alternative to Stripe for SaaS billing in 2025. Stripe's SaaS-specific features are unmatched:
- Stripe Billing — subscription management, proration, trial periods, usage-based billing
- Stripe Customer Portal — let customers manage their own subscriptions without you building a UI
- Webhooks — handle payment success, failure, cancellation, and refunds automatically
- Stripe Tax — automatic tax calculation and collection for global SaaS
Every SaaS I build has Stripe Billing configured from day one. If money can't flow in on day one, you don't have a business.
Clerk — Authentication and Team Management
Authentication sounds simple until you need: social logins, multi-factor authentication, organization accounts, role-based permissions, and SSO for enterprise clients. Building that from scratch takes weeks.
Clerk provides all of it with a few hours of integration. Their Organizations feature is particularly powerful for B2B SaaS — each customer can have their own team with different roles, all managed by Clerk.
Replit — Deployment and Hosting
Instead of provisioning servers, configuring Nginx, setting up SSL, and managing deployment pipelines — you connect your domain, set your environment variables, and click deploy. SSL is automatic. Scaling is managed. The entire DevOps layer is abstracted away.
Total Cost at Launch (Month 1)
- Next.js: Free (open source)
- Supabase: Free tier (up to 500MB database, 1GB storage)
- Stripe: 2.9% + 30¢ per transaction (no monthly fee)
- Clerk: Free up to 10,000 monthly active users
- Replit: ~$25/month for the Core plan
Total: ~$25/month to run a production SaaS. You pay for tools as you grow.
The best tech stack is the one your team can move fastest with. After 350+ apps, this is the stack I can move fastest with — and the results speak for themselves.