Open SaaS packages the tedious, repetitive parts of launching a SaaS into one opinionated template. Instead of wiring auth, billing, file uploads, analytics and email from scratch, you start from a working codebase where those pieces already talk to each other. The stack is React and Node.js with Prisma over Postgres, all orchestrated by Wasp, which generates the glue code and full-stack TypeScript types for you. It is 100% open source and you own every line of code you deploy, so there is no vendor lock-in.
Out of the box it includes pre-configured full-stack authentication that you control, checkout and webhooks for Stripe, Polar.sh and Lemon Squeezy, an admin dashboard with charts and tables, file uploads via AWS S3 presigned URLs, built-in email sending, cron jobs, a Markdown blog built with Astro, and an example AI-powered app wired to a large language model. End-to-end tests with Playwright and a GitHub Actions CI pipeline round out the developer experience.
Because it is built on Wasp, the project keeps pace with AI-assisted development: custom agent rules, skills and tools are provided so coding assistants can work productively inside the repo. It is aimed at solo founders and small teams who want to validate and ship an idea in days rather than months, while still running on a stack they fully understand.
