Repositories list

• numcodecs

  Public
  A Python package providing buffer compression and transformation codecs for use in data storage and communication applications.

  Python

  •

  MIT License

  •111111 forks•145145 stars•9393 issues•2929 pull requests•Updated Apr 12, 2026Apr 12, 2026

• geozarr-toolkit

  Public
  Tools for creating, exploring, and validating GeoZarr data

  JavaScript

  •

  MIT License

  •22 forks•2222 stars•22 issues•22 pull requests•Updated Apr 10, 2026Apr 10, 2026

• jzarr

  Public
  A Java implementation of the API offered by the Python zarr package

  Java

  •

  MIT License

  •2222 forks•55 stars•44 issues•33 pull requests•Updated Apr 10, 2026Apr 10, 2026

• VirtualiZarr

  Public

  zarr-developers/VirtualiZarr’s past year of commit activity
  Cloud-Optimize your Scientific Data as Virtual Zarr stores, using xarray syntax.

  Python

  •

  Apache License 2.0

  •6161 forks•271271 stars•147147 issues•2929 pull requests•Updated Apr 9, 2026Apr 9, 2026

• zarr-python

  Public

  zarr-developers/zarr-python’s past year of commit activity
  An implementation of chunked, compressed, N-dimensional arrays for Python.

  pythoncompressedndimensional-arrays+ 1

  pythoncompressedndimensional-arrayszarr

  Python

  •

  MIT License

  •396396 forks•2k2k stars•445445 issues•107107 pull requests•Updated Apr 9, 2026Apr 9, 2026

• pizzarr

  Public
  Slice into Zarr arrays in R 🍕

  zarr

  zarr

  R

  •

  Other

  •33 forks•4040 stars•1111 issues•00 pull requests•Updated Apr 8, 2026Apr 8, 2026

• cast-value.rs

  Public
  Implementation of the `cast_value` codec for Zarr.

  Rust

  •

  Apache License 2.0

  •22 forks•00 stars•22 issues•00 pull requests•Updated Apr 7, 2026Apr 7, 2026

• zarr-extensions

  Public
  This repository contains the specifications for Zarr extensions for Zarr version 3.

  1313 forks•1515 stars•1414 issues•1616 pull requests•Updated Apr 7, 2026Apr 7, 2026

• n5py

  Public
  Python implementation of the N5 file format

  Python

  •

  MIT License

  •11 fork•00 stars•88 issues•77 pull requests•Updated Apr 6, 2026Apr 6, 2026

• cast-value.py

  Public
  Python implementation of the `cast_value` codec.

  Python

  •

  MIT License

  •11 fork•00 stars•11 issue•00 pull requests•Updated Apr 2, 2026Apr 2, 2026

• geozarr-spec

  Public
  GeoZarr defines geospatial conventions for storing multidimensional georeferenced grids using the Zarr format

  HTML

  •

  Creative Commons Attribution 4.0 International

  •1919 forks•192192 stars•2323 issues•33 pull requests•Updated Apr 1, 2026Apr 1, 2026

• geozarr-site

  Public
  Landing page for anyone interested in GeoZarr development

  Vue

  •

  MIT License

  •44 forks•11 star•11 issue•22 pull requests•Updated Apr 1, 2026Apr 1, 2026

• zarr-java

  Public
  Java implementation of the Zarr Specification

  Java

  •

  MIT License

  •1919 forks•1919 stars•11 issue•11 pull request•Updated Mar 31, 2026Mar 31, 2026

• pydantic-zarr

  Public
  Pydantic models for Zarr

  Python

  •

  BSD 3-Clause "New" or "Revised" License

  •55 forks•4848 stars•3131 issues•33 pull requests•Updated Mar 30, 2026Mar 30, 2026

• blog

  Public
  Zarr Official Blog

  bloggeospatialdata-format+ 3

  bloggeospatialdata-formatbioimagingzarrgiscus

  Ruby

  •

  Creative Commons Attribution 4.0 International

  •88 forks•22 stars•33 issues•33 pull requests•Updated Mar 5, 2026Mar 5, 2026

• zeps

  Public
  Zarr Enhancement Proposals

  open-sourcecommunityfeedback

  open-sourcecommunityfeedback

  Ruby

  •

  Creative Commons Zero v1.0 Universal

  •1515 forks•1414 stars•55 issues•66 pull requests•Updated Mar 5, 2026Mar 5, 2026

• zarr-developers.github.io

  Public
  Zarr Homepage

  conventionsformatgeospatial+ 3

  conventionsformatgeospatialbioimagingndimensional-arrayszarr

  JavaScript

  •

  Other

  •2424 forks•44 stars•1616 issues•2020 pull requests•Updated Feb 14, 2026Feb 14, 2026

• perfcapture

  Public
  Capture the performance of a computer system whilst running a set of benchmark workloads.

  Python

  •

  MIT License

  •22 forks•33 stars•1212 issues•00 pull requests•Updated Jan 6, 2026Jan 6, 2026

• zarr-summit-2025

  Public
  Website for the 2025 Zarr Summit

  TypeScript

  •

  MIT License

  •22 forks•00 stars•00 issues•00 pull requests•Updated Dec 4, 2025Dec 4, 2025

• governance

  Public
  The governance process and model for zarr-developers

  Creative Commons Zero v1.0 Universal

  •99 forks•33 stars•88 issues•33 pull requests•Updated Nov 19, 2025Nov 19, 2025

• zarr-specs

  Public
  Zarr core protocol for storage and retrieval of N-dimensional typed arrays

  storagearrayszarr

  storagearrayszarr

  Creative Commons Attribution 4.0 International

  •3232 forks•105105 stars•123123 issues•1414 pull requests•Updated Sep 26, 2025Sep 26, 2025

• zarr-logo

  Public
  Official logos for the Zarr project

  logozarr

  logozarr

  22 forks•11 star•44 issues•11 pull request•Updated Sep 19, 2025Sep 19, 2025

• s3fs

  Public
  S3 Filesystem

  Python

  •

  BSD 3-Clause "New" or "Revised" License

  •290290 forks•00 stars•00 issues•00 pull requests•Updated Jun 4, 2025Jun 4, 2025

• gsoc

  Public
  Google Summer of Code - Zarr

  Creative Commons Zero v1.0 Universal

  •33 forks•11 star•00 issues•11 pull request•Updated Feb 8, 2025Feb 8, 2025

• zarr-illustrations-falk-2024

  Public
  Illustrations created by Henning Falk for the Zarr community

  illustrationszarr

  illustrationszarr

  Shell

  •00 forks•22 stars•00 issues•00 pull requests•Updated Jan 29, 2025Jan 29, 2025

• zarr-illustrations-falk-2022

  Public
  Illustrations created by Henning Falk for the Zarr community

  illustrationszarr

  illustrationszarr

  Shell

  •11 fork•4545 stars•33 issues•00 pull requests•Updated Jan 29, 2025Jan 29, 2025

• zarr_implementations

  Public
  Python

  •

  MIT License

  •1818 forks•4141 stars•1818 issues•44 pull requests•Updated Jul 24, 2024Jul 24, 2024

• community-calls

  Public
  Zarr Community Calls Website

  open-sourcediscussionsmeetings+ 1

  open-sourcediscussionsmeetingscommunity-calls

  Ruby

  •

  Creative Commons Zero v1.0 Universal

  •11 fork•22 stars•00 issues•00 pull requests•Updated Jun 26, 2024Jun 26, 2024

• codecs-registry

  Public
  Registry

  Python

  •11 fork•22 stars•22 issues•11 pull request•Updated Nov 29, 2023Nov 29, 2023

• community

  Public
  An open community with an interest in developing and using new technologies for tensor data storage.

  11 fork•1818 stars•4444 issues•11 pull request•Updated Nov 29, 2023Nov 29, 2023