SaaS / Web App Tech Stacks
Multi-tenant products where users log in, manage data, and often pay subscriptions. 10 verified production examples.
AGENTS.md Rules & Agent Skills for SaaS / Web App
Django + PostgreSQL + Redis + Celery
Production guidelines for Django 5 enterprise applications, PostgreSQL connection pooling, Redis caching, and Celery async workers.
intermediateFastAPI + Python + PostgreSQL (Async SQLAlchemy & Pydantic v2)
Production guidelines for FastAPI, Pydantic v2 validation, Async SQLAlchemy 2.0 (asyncpg), Alembic migrations, and PostgreSQL/Redis.
intermediateLaravel + Livewire + PostgreSQL
Production guidelines for Laravel 11 monoliths, Livewire reactive components, Eloquent ORM query discipline, and queued job workers.
intermediateNestJS + PostgreSQL + Redis + BullMQ
Enterprise backend architecture guidelines for NestJS modular design, PostgreSQL connection pooling, Redis BullMQ background jobs, and DTO validation.
starterNext.js 15 + Drizzle ORM + Supabase
Production guidelines for Next.js App Router, Drizzle ORM with postgres-js, Supabase Transaction Pooler (prepare: false), and RLS security.
starterNext.js 15 + Prisma ORM + PostgreSQL
Production guidelines for Next.js App Router, Server Actions, Prisma connection pooling, PgBouncer/Neon tuning, and Zod schema validation.
starterNuxt 3 + Vue + PostgreSQL
Production guidelines for Nuxt 3 server routes and universal rendering, Vue 3 Composition API, and PostgreSQL via a typed query layer.
advancedElixir + Phoenix LiveView + PostgreSQL
Real-time reactive web architecture for Elixir 1.17, Phoenix 1.7+, LiveView HTML-over-WebSockets, OTP supervision trees, and Ecto.
intermediateRuby on Rails + PostgreSQL + Redis + Sidekiq
Production guidelines for Ruby on Rails monoliths, ActiveRecord pool tuning, Redis Sidekiq background jobs, and modern Hotwire or React UI architecture.
starterSvelteKit + PostgreSQL + Drizzle ORM
Production guidelines for SvelteKit form actions and load functions, Drizzle ORM over PostgreSQL, and Svelte 5 runes-based reactivity.
intermediateNode.js + Express + MongoDB
Production guidelines for Express REST APIs, Mongoose schema design, and MongoDB indexing/transaction discipline.
Production SaaS / Web App Projects
Fasten Health
Self-hosted personal health record aggregator connecting thousands of medical institutions via standard SMART-on-FHIR protocols. Built in Go for secure single-binary local-first deployment with embedded encrypted SQLite storage and zero third-party telemetry.
Immich
High-performance Google Photos alternative; utilizes SvelteKit and NestJS with background Python workers for hardware-accelerated transcoding and facial recognition.
Taxonomy
The canonical modern open-source Next.js template demonstrating Server Components, shadcn/ui primitives, and Prisma schema modeling.
Typebot
Visual node-based builder: drag-and-drop state machine with lightweight web embed runtime.
Formbricks
Embeddable widget and admin portal in the same repo: agents make end-to-end changes in one context.
Maybe
Convention-heavy framework: AI agents predict file locations accurately, generating fewer bugs.
Documenso
Small team, agent-assisted workflow: unified language and strong type inference verify generated code.
Twenty
User-defined data model requires schema-flexible GraphQL layer that changes at runtime.
Plane
Heavy workflow and permission logic in a mature Python backend; frontend is a pure presentation layer.
Cal.com
Self-hostable SaaS: web, embed, and API packages in a single monorepo with type-safe boundaries.
Frequently Asked Questions
How many SaaS / Web App tech stacks are in the directory?
10 verified production SaaS / Web App projects are currently indexed, each with a full architecture breakdown and copy-paste AI scaffolding prompt.
What AGENTS.md rules or agent skills apply to SaaS / Web App projects?
Django + PostgreSQL + Redis + Celery, FastAPI + Python + PostgreSQL (Async SQLAlchemy & Pydantic v2), Laravel + Livewire + PostgreSQL, NestJS + PostgreSQL + Redis + BullMQ, Next.js 15 + Drizzle ORM + Supabase, Next.js 15 + Prisma ORM + PostgreSQL, Nuxt 3 + Vue + PostgreSQL, Elixir + Phoenix LiveView + PostgreSQL, Ruby on Rails + PostgreSQL + Redis + Sidekiq, SvelteKit + PostgreSQL + Drizzle ORM, Node.js + Express + MongoDB are battle-tested architecture rules for this category, each with a full AGENTS.md, CLAUDE.md, Cursor .mdc file and a Claude Code SKILL.md.
How do I get a custom stack recommendation for a SaaS / Web App project?
Take the STACK IT FAST architecture survey and select "SaaS / Web App" as your project type to get a ranked rule recommendation and an instant AI scaffolding prompt tailored to a "SaaS / Web App" project.