Ross ROSS = Recommend OSS · open-source software intelligence for agents

cloudflare/miniflare

🔥 Fully-local simulator for Cloudflare Workers. For the latest version, see https://github.com/cloudflare/workers-sdk/tree/main/packages/miniflare. observed · 2026-08-28

github.com/cloudflare/miniflare · homepage · TypeScript · MIT (permissive) · archived observed · 2026-08-28

Health v2 · maintenance only

10/100

  • Activity 11
  • Release rhythm 8
  • Longevity 100

Flags: archived

How is this computed?

round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.

  • gap_med: n/a
  • age_days: 1931
  • days_rel: 695
  • days_push: 538
  • n_releases_24m: 1

Full methodology

Adoption not part of the score

3924 stars · 209 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Miniflare is a fully-local simulator for Cloudflare Workers written in TypeScript, running worker code in a sandbox that implements the Workers runtime APIs. It supports most Workers features including KV, Durable Objects, R2, D1, and WebSockets, and is now maintained as part of the workers-sdk monorepo.

Use cases

  • develop and test Cloudflare Workers locally without internet
  • run integration tests against Workers bindings like KV and Durable Objects
  • simulate Workers runtime APIs offline
  • hot-reload Worker code during local development
  • test D1, R2, and KV storage locally before deploying
  • build custom local dev tooling on top of the Workers runtime

When to choose

  • you need a fully offline local environment for Cloudflare Workers
  • you want to write automated integration tests for Workers
  • you need programmatic control over the Workers runtime sandbox
  • you're building tooling that embeds a Workers-like runtime

When to avoid

  • you just want standard local development - use Wrangler instead
  • you need exact production parity for edge behaviors not covered by the simulator
  • you're not developing Cloudflare Workers at all

Facets

library · maturity active

testing http-server developer-tools simulation developer-tools web-development backend testing cross-platform cli cloudflare-workers local-development serverless kv durable-objects r2 d1 wrangler nodejs

10 sources

Member repositories

RepositoryRoleHealth v2
cloudflare/miniflaremain10

For agents

markdown · JSON · MCP: product_card(name="cloudflare/miniflare")

Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem