# griddynamics-archive/MMWormhole

Message passing between iOS apps and extensions.

Repository: https://github.com/griddynamics-archive/MMWormhole
Canonical: https://ross.abutalabs.com/products/mmwormhole
Language: Objective-C
License: MIT
License Family: permissive
Last push: 2024-02-02T20:45:32+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 4288, "days_push": 943, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3932, forks 319 (observed 2026-08-28T04:08:30.003843+00:00)

## What it is
MMWormhole is an Objective-C library that enables message passing between an iOS or OS X app and its extensions via files written to a shared App Group container. It supports near-realtime notifications using CFNotificationCenter Darwin notifications, simulating interprocess communication where none officially exists.

## Use cases
- pass data between an iOS app and its widget extension
- send commands from a Today extension to the containing app
- sync shared state between app and watch extension
- get realtime updates in an extension when the app changes data
- share small messages between processes on macOS

## When to choose
- you need lightweight message passing between an iOS/OS X app and its extensions
- your app uses background modes so notifications can be delivered promptly
- you want a simple mailbox-style API with identifiers for message channels

## When to avoid
- you need true interprocess communication or large data transfers
- your containing app is not running in the background, since notifications may not fire
- you are building a new Swift-first project and prefer modern alternatives

## Facets
- artifact type: library
- maturity: maintenance
- function: message-queue, middleware
- domain: mobile-development, developer-tools
- platform: -
- tags: ipc, app-extensions, app-groups, darwin-notifications, cocoapods, interprocess-communication, ios-tools, ios, macos, mobile, objective-c

## Member repositories
- griddynamics-archive/MMWormhole (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:30.003843+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:24:40.397354+00:00, confidence not recorded.
  - readme: https://github.com/griddynamics-archive/MMWormhole (fetched 2026-08-28T04:08:30.003843+00:00, sha f81876e96d3c)
- Data as of 2026-08-30T08:39:29.467469+00:00.