Fastify
High-performance server framework for Node.js with minimal overhead and extensible plugin architecture
- Also known as
- fastify
What is Fastify?
A Node.js web framework emphasizing fast request handling and low resource consumption while maintaining strong security, input validation, and developer experience.
Fastify pricing
We don't have Fastify's full plan breakdown yet (its pricing page resisted automated reading). Here's what we could confirm. Always check live pricing for exact numbers.
What Fastify does
The capabilities that matter for web frameworks, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- Rendering model
- -
- File-based routing
- ✓
- Language
- JavaScript/TypeScript
- Server components
- -
- Streaming SSR
- -
- Built-in API / backend routes
- ✓
- First-class TypeScript
- ✓
- Fast refresh / HMR
- -
- Edge runtime support
- -
Platform & deployment
Independently observed- CLI
- Web
- Cloud / SaaS
Integrations (40)
Independently observed- Firebase
- OAuth
- Mongoose
- TypeORM
- ObjctionJS
- GraphQL
- Swagger
- OpenAPI
- Stoplight Elements→
- React
- Vue
- Svelte→
- GCP Cloud Storage
- Casbin
- AWS Lambda→
- AMQP⇄
- Express→
- Koa→
- Hapi→
- Nuxt→
- Server-Sent Events→
- TypeBox→•
- Valkey→
- Next.js
- Apollo Server
- Angular
- PostgreSQL
- MongoDB
- Redis
- Elasticsearch
- Swagger/OpenAPI
- WebSocket
- JWT
- Helmet
- Sentry
- RabbitMQ
- CORS
- CSRF
- OAuth2
- Kubernetes
Security & compliance
Known vulnerabilities: 17 (12 in the last 12 months), max severity HIGH sourcea count reflects scale & disclosure, not quality
Fastify FAQ
Common questions about Fastify, answered from independent, dated evidence.
What is Fastify?
A Node.js web framework optimized to handle high request volumes with minimal overhead, featuring a plugin system, JSON Schema validation, and native TypeScript support. It is indexed under Web Frameworks.
Source: https://fastify.dev
Is Fastify free to use?
Fastify is open source, so it can be self-hosted and used at no licence cost. It is released under the MIT licence. Pricing changes often, so verify at source before relying on it.
Source: https://fastify.dev
What platforms does Fastify support?
Fastify supports the web and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.
Source: https://fastify.dev
Can Fastify be self-hosted?
Yes. Fastify can be deployed cloud / SaaS and self-hosted, so it does not have to run on the vendor's infrastructure.
Source: https://fastify.dev
What does Fastify integrate with?
We have confirmed 26 integrations for Fastify, including Next.js, Apollo Server, Angular, PostgreSQL, MongoDB, Redis, Elasticsearch and Swagger/OpenAPI, plus 18 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.
Source: https://fastify.dev
Is Fastify open source?
Yes. Fastify is published under the MIT licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.
Fastify alternatives
Other web frameworks we track, ranked by the same independent score.
- Next.jsReact-based framework for complete web application developmenthigh · 76%
- FastAPIA Python web framework for building high-performance APIs quickly and easilymedium · 69%
- Nuxthigh · 77%
- ExpressA lightweight Node.js framework for building web applications without imposing strict architectural constraintshigh · 77%
- NestJShigh · 76%
- DjangoA web framework for rapid development of production-ready applicationsmedium · 70%
Compare Fastify
Side by side against other web frameworks, attribute by attribute, with a source on every value.
The vioscaleAI score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for Fastify, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Capabilities | 92 | 0.08 | 7.6 | ✓ |
| Release cadence | 98 | 0.07 | 6.6 | ✓ |
| Dependent projects | 70 | 0.08 | 5.6 | ✓ |
| Development activity | 42 | 0.12 | 5.0 | ✓ |
| Security score | 83 | 0.05 | 4.4 | ✓ |
| Stars | 86 | 0.03 | 2.8 | ✓ |
| Integrations | 42 | 0.05 | 2.2 | ✓ |
| Security posture | 0 | 0.09 | 0.0 | - |
| Package downloads | 0 | 0.17 | 0.0 | - |
| Developer Q&A activity | 0 | 0.08 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Activity
| Attribute | Value | Evidence |
|---|---|---|
| Commits last 30d | 20 | mediumsource · 2026-10-05 · 65% |
Adoption
Content
| Attribute | Value | Evidence |
|---|---|---|
| Faq | 6 items | mediumsource · 2026-09-10 · 66% |
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | Language: JavaScript/TypeScript · Api first: Yes · Api routes: Yes · Async model: event-loop-async · File routing: Yes · Cli scaffolding: Yes | mediumsource · 2026-10-05 · 60% |
Integrations
| Attribute | Value | Evidence |
|---|---|---|
| Count | 28 | mediumsource · 2026-10-05 · 60% |
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | JavaScript | highsource · 2026-10-05 · 90% |
License
| Attribute | Value | Evidence |
|---|---|---|
| Spdx | MIT | highsource · 2026-10-05 · 95% |
Pricing
Release
Security
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