An opinionated, structured Node.js framework versus the minimal HTTP layer most Node apps started on — pick based on how much structure you want imposed.
Pick NestJS when the team values a structured, Angular-style architecture — modules, dependency injection, decorators — and you're building a larger service where convention pays back the upfront ceremony. Pick Express when you want a thin, unopinionated HTTP layer you assemble yourself, and you'd rather lean on the wider Node ecosystem than adopt a framework's mental model.
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| Attribute | Express | NestJS |
|---|---|---|
| Category | Backend Framework | Backend Framework |
| Pricing Model | open-source | open-source |
| Starting Price | Free | Free |
| Free Tier | Yes | Yes |
| Open Source | Yes | Yes |
| Platforms | — | — |
