# pixelglow/ZipZap

zip file I/O library for iOS, macOS and tvOS

Repository: https://github.com/pixelglow/ZipZap
Canonical: https://ross.abutalabs.com/products/zipzap
Language: Objective-C
License: BSD-2-Clause
License Family: permissive
Last push: 2021-10-01T15:06:28+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 5058, "days_push": 1797, "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 1215, forks 197 (observed 2026-08-28T04:04:01.071110+00:00)

## What it is
ZipZap is a zip file I/O library for iOS, macOS and tvOS written in Objective-C. It offers a simple two-class API for reading, writing and updating zip archives using familiar Foundation classes like NSArray, NSData and NSStream.

## Use cases
- read and extract zip files on ios or macos
- create zip archives in an objective-c or swift app
- update single entries in a zip compound document
- bundle compound documents as zip files
- unzip files in a tvos app

## When to choose
- you need zip support natively on Apple platforms in Objective-C or Swift
- you want random access to entries in a zip archive
- you need efficient in-place updates of zip entries with low memory pressure

## When to avoid
- you need zip support on Linux, Windows or other non-Apple platforms
- you need support for other archive formats like tar, rar or 7z
- you need a actively developed library with frequent updates

## Facets
- artifact type: library
- maturity: maintenance
- function: compression, file-system, serialization
- domain: files, developer-tools, apple-ecosystem
- platform: cpp
- tags: zip, objective-c, apple-platforms, archive-io, ios, macos

## Member repositories
- pixelglow/ZipZap (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:01.071110+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 2026-08-30T06:17:17.682100+00:00, confidence not recorded.
  - readme: https://github.com/pixelglow/ZipZap (fetched 2026-08-28T04:04:01.071110+00:00, sha 5fcee41953f5)
- Data as of 2026-08-30T08:39:29.467469+00:00.