OPEN SOURCE

create-saas-app · Modern SaaS Monorepo Boilerplate

Open-source interactive CLI (npx create-saas-app-cli) that scaffolds a fully-configured Turborepo monorepo in seconds — with database, auth, queues, payments, observability, and CI/CD selected interactively at prompt time.

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create-saas-app · Modern SaaS Monorepo Boilerplate

Client

Open Source (Personal)

Timeline

Aug 2025 – Present

My Role

Creator & Lead Maintainer

Project Overview

create-saas-app is an open-source CLI and architecture blueprint for building modern, production-ready SaaS platforms. It generates a modular monorepo with Next.js (RSC) frontend, Express.js API, BullMQ worker, and a suite of shared packages for config, database, auth, queue, and logging. The stack supports PostgreSQL/MongoDB/SQLite, Redis, Prometheus, and Grafana, with Docker Compose orchestration for local and cloud deployments. The CLI enables rapid bootstrapping of new SaaS products with best practices for type safety, observability, and developer velocity. With 36+ unique project permutations across 4 database options, 3 package managers, and multi-rate-limit strategies, it eliminates 1–3 days of setup boilerplate per project.

Key Features

Feature Groups

Features

1 / 0

Key Capabilities

One-command CLI scaffolding (npx create-saas-app-cli) for SaaS monorepos

#01

Template-as-code architecture — pure TypeScript functions, no static assets

#02

Composable scaffold — each optional feature independently toggled at prompt time

#03

Multi-ORM support: Drizzle (Postgres/SQLite), Prisma (Postgres), Mongoose (MongoDB)

#04

Next.js 15 frontend with App Router and RSC

#05

Express.js API with modular routing and validation

#06

BullMQ worker for background jobs and async processing

#07

Docker Compose for local dev with PostgreSQL/MongoDB and Redis

#08

Optional Prometheus, Grafana, and Loki for observability

#09

Built-in auth (JWT + bcrypt), payments (Razorpay), email (Resend/Nodemailer)

#10

CI/CD pipeline with automated npm publish gate (build → test → dry-run)

#11

Polished UX with @clack/prompts, directory-conflict guard, and post-scaffold dependency install

#12

TypeScript-first, with unified types across all apps/packages

#13

Case Study

Problem & Approach

The Challenge

Problem Statement

Bootstrapping a production-ready multi-tenant SaaS backend from scratch wastes 1–3 days of setup time for every new project. Developers need to wire up database, auth, queues, payments, observability, and CI/CD — all from scratch. Existing boilerplates were either too opinionated, lacked modularity, or failed to address real production concerns like monitoring and deployment.

The Solution

Our Approach

Designed a template-as-code architecture where all generated file contents are pure TypeScript template functions (not static files on disk), making the CLI a fully self-contained npm package with no extra assets. Each optional feature (auth, queue, payments, email, observability, Next.js web app) is independently toggled at prompt time and only wired into the generated codebase when selected. Implemented a unified database package interface that correctly emits Drizzle, Prisma, or Mongoose schemas based on a single prompt choice. A prepublishOnly script enforces a build → test:ci → pack --dry-run pipeline before any npm publish, preventing broken releases.

Details

Project Information

Client

Open Source (Personal)

Timeline

Aug 2025 – Present

Role

Creator & Lead Maintainer

Technologies

20 Technologies

Tech Stack

20 Technologies

Node.js

TypeScript

Next.js

Express.js

BullMQ

Redis

Prisma

Drizzle

Mongoose

PostgreSQL

MongoDB

SQLite

Docker

Prometheus

Grafana

Loki

Pino

Jest

Vitest

GitHub Actions

Outcomes

Results & Impact

#01

Published to npm (v1.2.0) — anyone can bootstrap production-grade SaaS infrastructure with a single npx command

#02

Generates 20+ files across 10+ packages per run with 36+ unique project permutations

#03

Eliminates 1–3 days of SaaS project setup boilerplate per project

#04

Composable scaffold keeps output projects lean — only selected features are wired in

#05

Self-contained npm package with zero static assets required

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GitHub Repository Overview

NPM Package Listing

Publish Workflow (CI/CD)

Automated Testing Workflow

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