# mcmilk/7-Zip-zstd

7-Zip with support for Brotli, Fast-LZMA2, Lizard, LZ4, LZ5 and Zstandard

Repository: https://github.com/mcmilk/7-Zip-zstd
Canonical: https://ross.abutalabs.com/products/7-zip-zstd
Homepage: https://mcmilk.de/projects/7-Zip-zstd/
Language: C
License: NOASSERTION
License Family: other
Topics: archiver, brotli, flzma2, lz4, lz5, lizard, lzma, lzma2, 7z, 7-zip, 7zip, zstd, zstandard, lzip
Last push: 2026-08-11T11:06:42+00:00

## Health v2 (maintenance only)
Score: 96/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 97, release rhythm 92, longevity 100
- inputs: {"age_days": 3721, "days_push": 22, "days_rel": 55, "gap_med": 26, "n_releases_24m": 8}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 7312, forks 407 (observed 2026-08-28T04:09:58.165350+00:00)

## What it is
A fork of 7-Zip adding modern compression codecs (Zstandard, Brotli, LZ4, LZ5, Lizard, Fast LZMA2) to the archiver's GUI and CLI. It can be installed as a full application or as codec plugins for an existing 7-Zip installation.

## Use cases
- compress archives with zstandard instead of deflate
- create 7z archives using lz4 or brotli codecs
- fast multithreaded file archiving
- add zstd codec to existing 7-Zip install
- compress backups quickly to USB drives

## When to choose
- you want 7-Zip with faster modern codecs like zstd or lz4
- you need a GUI archiver with zstandard support on Windows

## When to avoid
- you only need standard 7z/zip compatibility
- you need a library to embed compression in your own code

## Facets
- artifact type: application
- maturity: active
- function: compression, cli, gui, file-system
- domain: files, developer-tools
- platform: windows, cli
- tags: 7-zip, zstandard, brotli, lz4, archiver, fork, command-line, linux, macos

## Member repositories
- mcmilk/7-Zip-zstd (main) score 96

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:58.165350+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 2026-08-29T17:38:40.663081+00:00, confidence not recorded.
  - readme: https://github.com/mcmilk/7-Zip-zstd (fetched 2026-08-28T04:09:58.165350+00:00, sha 002388fa8a70)
  - homepage: https://mcmilk.de/projects/7-Zip-zstd/ (fetched 2026-08-29T08:34:06.553937+00:00, sha 75e4d76c7ab0)
  - site_page: https://mcmilk.de/docs (fetched 2026-08-29T08:34:06.556300+00:00, sha 2a2c41226856)
  - site_page: https://mcmilk.de/about (fetched 2026-08-29T08:34:06.557885+00:00, sha 63eeadf2cfc8)
- Data as of 2026-08-30T08:39:29.467469+00:00.