Fastify vs Koa
Updated Aug 23, 2026
Quick Verdict
Both Fastify and Koa are popular choices in the Backend Frameworks space.
GitHub Stars
Fastify 37.0K
vs
Koa 35.7K
Downloads/wk
Fastify 0
vs
Koa 0
Contributors
Fastify 920
vs
Koa 254
Bundle Size
Fastify 140.2 KB
vs
Koa 63.3 KB
Detailed Comparison
Side-by-side metrics from GitHub and npm
Metric
Fastify
Koa
GitHub Stars
37.0K
35.7K
Weekly Downloads
0
0
Forks
3.0K
3.2K
Open Issues
129
42
Contributors
920
254
Bundle Size (gzip)
140.2 KB
63.3 KB
Dependencies
15
18
Latest Version
5.12.1
3.2.1
Last Commit
Aug 22, 2026
Aug 23, 2026
License
MIT
MIT
First Published
Oct 7, 2016
Nov 6, 2013
Feature Comparison
Framework capabilities at a glance
Feature
Fastify
Koa
Typescript
Middleware
Websockets
Validation
Openapi
Edge Runtime
Decorators
Frequently Asked Questions
Common questions about Fastify vs Koa
Is Fastify better than Koa?
It depends on your use case. Fastify is fast and low-overhead web framework for node.js, while Koa is expressive middleware for node.js using async functions. 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 Koa?
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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