koajs/koa

Prefer upstream for any new work. Choose this fork only if you need a frozen legacy Koa variant and are willing to accept substantial divergence from current Koa.

Prefer upstream unless you specifically need an untouched older snapshot. This fork adds no visible capabilities and is 108 commits behind, so adopters trade away maintenance and fixes without gaining features.

Prefer upstream unless you specifically need this fork's older baseline or embedded workflow changes. For new work, the fork is too stale and too far behind to be a low-risk starting point.

Choose this fork only for legacy maintenance of old generator-based Koa code. For new work or active maintenance, upstream Koa is the better default because this fork is both stale and materially behind current framework behavior.

Prefer upstream unless you specifically need a frozen snapshot; this fork adds no new capabilities and is behind current Koa by 7 commits.

Choose this fork if you want a TypeScript/ESM-oriented Koa variant and are comfortable owning divergence. Choose upstream if you want the latest fixes, broad compatibility, and the lowest maintenance risk.

Choose this fork if you want Chinese documentation and a localized Koa reference site. Do not choose it as your primary Koa source if you need current framework code, active maintenance, or the latest upstream behavior.

Prefer upstream unless you specifically need this older frozen snapshot. This fork offers no visible added capability, while lagging materially behind current Koa maintenance.

Choose this fork only if you specifically need an older Koa 2.x snapshot with ESM support and can accept being far behind upstream; otherwise current upstream is the safer default.