4 Open source SaaS starters

Sep 25, 2019

What’s that?

Starting a SaaS business is never easy - and has lots of repeatable parts such as: authentication, billing, user management and more. I love to focus on what matters, which is the core algorithm/business value behind my SaaS.

The List

SaaS Python base application with Flask, Vue, Bootstrap, Webpack


  • User authentication
  • Email authentication (with email confirmation)
  • User registration, login, logout
  • Simple user profile page
  • Payment support
  • Fully stripe integration (plans list is automatically generated from your Stripe account)
  • User plans support
  • Payments method support (only credit cards for now, by Stripe)
  • Users can select a plan, change it, cancel, pause, resume
  • User can see all the history of payment-related actions

SaaS Boilerplate - Node.js

Build your own SaaS business with SaaS boilerplate. Productive stack: React, Material-UI, Next, MobX, WebSockets, Express, Node.js , Mongoose, MongoDB. Written with TypeScript



  • Server-side rendering for fast initial load and SEO.
  • User authentication with Google, cookie, and session.
  • Production-ready Express server with compression, parser, and helmet.
  • Transactional emails (AWS SES): welcome, team invitation, and payment.
  • Adding email addresses to newsletter lists (Mailchimp): new users, paying users.
  • File upload, load, and deletion (AWS S3) with pre-signed request for: Posts, Team Profile, and User Profile.
  • Team creation, Team Member invitation, and settings for Team and User.

    Opinionated architecture:

  • keeping babel and webpack configurations under the hood,
  • striving to minimize number of configurations,
  • withAuth HOC to pass user prop and control user access to pages,
  • withLayout HOC for shared layout and to pass additional data to pages, withStore HOC, developer-friendly state management with MobX,
  • server-side rendering with Material-UI,
  • model-specific components in addition to common components.
  • Universally-available environmental variables at runtime.
  • Server-side environmental variables managed with dotenv.
  • Browser-side environmental variables managed with Next.js and webpack’s process.env substitution (see ./app/.env.blueprint).
  • Custom logger (configure what not to print in production).
  • Useful components for any web app: ActiveLink, AutoComplete, Confirm, Notifier, MenuWithLinks, and more.
  • Analytics with Google Analytics.

    Docker CE Integration:

  • spawn MongoDB database for development.
  • stage service stack with lean container images.

    Production-ready, scalable architecture:

  • app - user-facing web app with Next/Express server, responsible for rendering pages (either client-side or server-side). app sends requests via API methods and fetch to api server’s Express routes.
  • api - server-only web app with Express server, responsible for processing requests for internal and external APIs. we prepared both apps for easy deployment to now by Zeit.
  • Subscriptions with Stripe:
  • subscribe/unsubscribe Team to plan,
  • update card information,
  • verified Stripe webhook for failed payment for subscription.

Reeve - Web application scaffolding for production environments - Node.js Reeve


  • Express Server
  • React
  • Redux
  • Server Configuration & Environment Store
  • Webpack
  • Redis
  • MySQL Server
  • SASS
  • Bootstrap
  • i18n Translation File Support
  • React-Tooltips
  • Dropdown Alerts
  • AVA Test System
  • JS Validation
  • Google Analytics
  • Subdomains
  • Session Storage
  • React Router
  • User Authentication
  • Error Reporting
  • JSON Web Tokens
  • Polyfills & IE Support
  • Email Sending
  • Sentry error logging
  • Papertrail logging
  • API Rate Limiting

DjaoDjin - Python,Django


Accounts & billing workflows every SaaS needs DjaoDjin builds the infrastructure, so you can focus on your product.


  • Landing pages - Homepage, pricing
  • Account profiles
  • Billing - Stripe
  • Dashboards
  • Access control policies
  • Registrations
  • Authentication
  • Checkout
  • Vue.js Frontend