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Head-to-Head NPM Comparison

expressvsfastify

Detailed package comparison for bundle size, weekly downloads, supply chain security, and license obligations.

Weekly Downloads Leader
express87.4M/wk
Security Grade Leader
Equal Rating100/100
TypeScript Ready
fastify
Specification
expressv5.3.0
fastifyv5.12.7
Weekly Downloads87.4MWinner9.3M
Unpacked Size74.8 KB2.83 MB
Security Grade
A+(100/100)
A+(100/100)
Lifecycle Scripts Clean (No scripts) Clean (No scripts)
TypeScript SupportCommunity @types Built-in Types (.d.ts)
License TypeMITPERMISSIVEMITPERMISSIVE
Direct Dependencies2815
Active Maintainers55
Last ReleaseOct 9, 2026Oct 13, 2026
Install Commandnpm i expressnpm i fastify
Full Security ReportView express AuditView fastify Audit
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Frequently Asked Questions

Which package is more popular, express or fastify?
express is currently more popular with higher weekly downloads (87.4M/week) compared to fastify (9.3M/week).
Which has better supply chain security, express or fastify?
express has a security score of 100/100 (Grade A+), while fastify holds 100/100 (Grade A+). Both packages have equal security standings.
Do express and fastify provide TypeScript definitions?
express may require external @types definitions, while fastify includes native TypeScript definitions.
What licenses do express and fastify use?
express is published under the MIT license (PERMISSIVE), and fastify is licensed under MIT (PERMISSIVE).