Backend Framework Data v1.0.0 Updated 2026-01-29

Fastify

Fast and low overhead web framework

N/A N/A Unknown N/A
76 /100
Strong pick Good confidence (85%)

Quick Verdict

Best For

  • API development
  • Microservices architecture
  • Real-time applications
  • High-performance backends

Consider Alternatives If

  • Simple static sites
  • Heavy computation workloads
  • Legacy system integration

Top Alternatives

Express 67Hono 85Elysia 86

Score Breakdown

6 dimensions evaluated with transparent methodology

Performance
50 −50

High throughput with low latency

  • Efficient request handling
  • Low memory footprint
  • Async support
Why not 100%:
  • −25 Performance depends on usage patterns
  • −25 Middleware overhead
Developer Experience
71 −29

Modern API with TypeScript support

  • TypeScript-first
  • Good documentation
  • Active community
Why not 100%:
  • −14 Learning curve for advanced patterns
  • −14 Debugging complexity
Ecosystem
100

Growing plugin and middleware ecosystem

  • Plugin architecture
  • Middleware support
  • Community packages
Maintainability
60 −40

Active development with regular releases

  • Regular updates
  • Clear changelog
  • Migration guides
Why not 100%:
  • −20 API changes in minor versions
  • −20 Dependency updates needed
Cost Efficiency
90 −10

Open-source with no licensing costs

  • MIT/Open-source license
  • No vendor lock-in
  • Self-hostable
Why not 100%:
  • −5 Infrastructure costs
  • −5 Support requires expertise
Compliance
85 −15

Security best practices supported

  • HTTPS support
  • Security headers
  • Input validation
Why not 100%:
  • −7 Security is developer responsibility
  • −7 No built-in compliance features

Compare Alternatives

How Fastify stacks up against similar technologies

TechnologyOverallPerfDXEcosystem
Current Fastify765071100
Express Largest ecosystem67———Compare →
Hono Edge-native, ultrafast85———Compare →
Elysia Bun-optimized, type-safe86———Compare →
Full comparison with Express

Sources & Methodology

How we calculate these scores: transparent and reproducible

Deterministic Scoring

Same inputs always produce the same outputs. We use versioned lookup tables, not LLM opinions. Every score is explainable and reproducible.

Learn how it works →
primary

GitHub

Repository activity, stars, contributors, issue resolution time

primary

NPM Registry

Weekly downloads, package dependencies, version history

secondary

Bundlephobia

Bundle size, tree-shaking efficiency, dependency weight

secondary

OSV Database

Known vulnerabilities, security advisories, CVE tracking

Data version: 1.0.0 Last updated: 2026-01-29 Confidence: 85%

Frequently Asked