Comparison

Actix vs Fastify

On the evidence we track, Fastify leads this comparison with a composite score of 70/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
Actix63
★Fastify70
Score
vioscaleAI score
Actix63 / 100high · 79%
Fastify70 / 100high · 78%
Pricing
Free tier
Actix–
Fastify✓
Model
Price level
Actixfree
Fastifyfree
Integrations
Count
Actix4
Fastify28
Adoption
Dependent repos
Actix6,843
Fastify16,712
Github stars
Actix24,857
Fastify37,232
Activity
Commits last 30d
Actix84
Fastify20
Release
Cadence days
Actix1
Fastify4
History
Fastify20 items
License
Spdx
FastifyMIT
Language
Primary
ActixRust
FastifyJavaScript
Content
Faq
Actix–
Fastify6 items

Capabilities

Feature-by-feature on the axes that matter for web frameworks. “-” means undocumented, not absent.

Core
Rendering model
Actix-
Fastify-
File-based routing
Actix-
Fastify✓
Language
ActixRust
FastifyJavaScript/TypeScript
Rendering
Server components
Actix-
Fastify-
Streaming SSR
Actix✓
Fastify-
Fullstack
Built-in API / backend routes
Actix✓
Fastify✓
DX
First-class TypeScript
Actix-
Fastify✓
Fast refresh / HMR
Actix-
Fastify-
Deployment
Edge runtime support
Actix-
Fastify-

What each one is

The product in its own terms, so the numbers below have context.

Actix

A high-performance web framework for Rust that supports streaming responses, request routing, HTTP client capabilities, and integrations with popular databases and ORMs.

Independently observed

Fastify

Leader

A Node.js web framework emphasizing fast request handling and low resource consumption while maintaining strong security, input validation, and developer experience.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Actix

Open source
as of verify ↗

Fastify

Leader
Open source
as of verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platforms
Web
Actix✓
Fastify✓
CLI
Actix✗
Fastify✓
Deployment
Cloud / SaaS
Actix–
Fastify✓

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

In common (1)
  • MongoDB

Actix

4 total - 3 not shared
  • Diesel
  • SQLite
  • Postgres
Independently observed

Fastify

Leader
40 total - 39 not shared
  • Next.js
  • Apollo Server
  • Angular
  • PostgreSQL
  • Redis
  • Elasticsearch
  • Swagger/OpenAPI
  • WebSocket
  • JWT
  • Helmet
  • Sentry
  • RabbitMQ
  • CORS
  • CSRF
  • OAuth2
  • Kubernetes
  • Firebase
  • Mongoose
  • TypeORM
  • OAuth
  • GraphQL
  • Swagger
  • OpenAPI
  • React
  • +15 more
Independently observed
Still deciding?

Actix or Fastify: which one depends on you

A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.

Free to run, no account needed to start. How the evaluation works

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.