We get asked this question every week: "Should I build my SaaS on Rails or Next.js?" The answer depends on what you're building, but for most SaaS products, we recommend Rails. Here's why.
Rails: Best for SaaS MVPs and Business Logic
Ruby on Rails is an opinionated full-stack framework. It makes decisions for you — database ORM, email handling, background jobs, testing, authentication — so you're writing business logic from day one, not configuring build tools.
Choose Rails when:
- You're building a SaaS with user accounts, billing, and CRUD operations
- Speed to market matters (Rails ships 2-3x faster than Next.js for typical SaaS)
- You need server-side rendering for SEO
- Your app is more "business logic" than "interactive UI"
- You want a battle-tested, stable framework (20 years of production use)
Next.js: Best for Heavy Frontend Interactivity
Choose Next.js when:
- Your product IS the UI (design tools, dashboards with real-time charts)
- You need a mobile app too (React Native shares components)
- Your team already knows React deeply
- You're building something like Figma or Linear, not something like Basecamp
Our Real-World Experience
We've built production apps on both. Our poker platform (PlasmaPoker) uses React + TypeScript for the game client because poker requires rich real-time UI, but Rails for the marketing website and admin because those are classic server-rendered pages.
For most SaaS products — inventory management, CRM, analytics platforms, marketplaces — Rails gets you to revenue faster. And getting to revenue is what matters.
The Bottom Line
Don't let technology choice paralyze you. Both work. But if you're building a SaaS and need to ship fast, Rails wins on developer productivity, hosting simplicity, and time-to-market. Talk to us about your project.