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Koa

Verified Sep 2026

Expressive middleware for node.js

The Express successor by the original team: async/await-first middleware composition.

The Express team's 2013 redesign: async/await middleware via generators (now async functions), no callback hell, smaller core. Modern and clean, though Express's ecosystem gravity kept most on the old guard. Koa is the purist's choice.

Who it's for

Node.js developers who want a lightweight, async/await-native middleware stack designed by the original Express team.

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