Three Node backend frameworks with three different shapes — an opinionated, decorator-driven architecture, the minimal unopinionated default, and a modern high-throughput middle ground.
Pick NestJS when the team wants a structured, Angular-style architecture — modules, dependency injection, decorators — and you're building a larger service where the upfront ceremony pays back in long-term maintainability. Pick Express when you want a thin, unopinionated HTTP layer you assemble yourself, and the deepest pool of compatible middleware and tutorials matters more than performance or built-in structure. Pick Fastify when you want a modern, schema-driven framework with serious throughput and a cleaner plugin model than Express, without committing to NestJS's full architectural worldview.
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| Attribute | NestJS | Express | Fastify |
|---|---|---|---|
| Category | Backend Framework | Backend Framework | Backend Framework |
| Pricing Model | open-source | open-source | open-source |
| Starting Price | Free | Free | Free |
| Free Tier | Yes | Yes | Yes |
| Open Source | Yes | Yes | Yes |
| Platforms | — | — | — |
No data available.
See full review of Fastify→Backend Framework
Fastify vs Express