Fastify vs NestJS
Updated Aug 23, 2026
Quick Verdict
NestJS has 2.1x more GitHub stars.
GitHub Stars
Fastify 37.0K
vs
NestJS 76.4K
Downloads/wk
Fastify 0
vs
NestJS 0
Contributors
Fastify 920
vs
NestJS 727
Bundle Size
Fastify 140.2 KB
vs
NestJS 48.7 KB
Detailed Comparison
Side-by-side metrics from GitHub and npm
Metric
Fastify
NestJS
GitHub Stars
37.0K
76.4K
Weekly Downloads
0
0
Forks
3.0K
8.5K
Open Issues
129
25
Contributors
920
727
Bundle Size (gzip)
140.2 KB
48.7 KB
Dependencies
15
5
Latest Version
5.12.1
11.2.1
Last Commit
Aug 22, 2026
Aug 22, 2026
License
MIT
MIT
First Published
Oct 7, 2016
May 14, 2017
Feature Comparison
Framework capabilities at a glance
Feature
Fastify
NestJS
Typescript
Middleware
Websockets
Validation
Openapi
Edge Runtime
Decorators
Frequently Asked Questions
Common questions about Fastify vs NestJS
Is Fastify better than NestJS?
It depends on your use case. Fastify is fast and low-overhead web framework for node.js, while NestJS is a progressive node.js framework for building efficient server-side applications. Compare the stats and features above to decide which fits your needs.
Is Fastify still maintained in 2026?
Yes, Fastify was last updated on August 22, 2026 and has 920 contributors.
Can I migrate from Fastify to NestJS?
Migration complexity depends on how deeply Fastify is integrated into your project. Both tools serve similar purposes in the Backend Frameworks space, so migration is generally feasible with proper planning.
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