https://github.com/ijl/orjson

dataclasses datetime deserialization json numpy pyo3 python rust serialization

Score: 30.35811549502108

Last synced: about 9 hours ago
JSON representation

Repository metadata:

Fast, correct Python JSON library supporting dataclasses, datetimes, and numpy

Host: GitHub
URL: https://github.com/ijl/orjson
Owner: ijl
License: apache-2.0
Created: 2018-11-21T23:43:14.000Z (over 7 years ago)
Default Branch: master
Last Pushed: 2026-05-06T14:41:30.000Z (8 days ago)
Last Synced: 2026-05-06T15:42:59.576Z (8 days ago)
Topics: dataclasses, datetime, deserialization, json, numpy, pyo3, python, rust, serialization
Language: Python
Homepage:
Size: 5.53 MB
Stars: 8,055
Watchers: 37
Forks: 304
Open Issues: 0
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- License: LICENSE-APACHE

Package metadata

Total packages: 33
Total downloads:
- conda: 5,113,852 total
- pypi: 180,031,904 last-month
Total docker downloads: 1,712,840,009
Total dependent packages: 1,238 (may contain duplicates)
Total dependent repositories: 12,671 (may contain duplicates)
Total versions: 325
Total maintainers: 7
Total advisories: 2

pypi.org: orjson

Fast, correct Python JSON library supporting dataclasses, datetimes, and numpy

Homepage:
Documentation: https://orjson.readthedocs.io/
Licenses: MPL-2.0 AND (Apache-2.0 OR MIT)
Latest release: 3.11.9 (published 8 days ago)
Last Synced: 2026-05-12T21:02:21.953Z (2 days ago)
Versions: 149
Dependent Packages: 1,197
Dependent Repositories: 12,646
Downloads: 180,031,819 Last month
Docker Downloads: 1,712,840,009
Rankings:
- Dependent packages count: 0.023%
- Docker downloads count: 0.032%
- Downloads: 0.061%
- Dependent repos count: 0.075%
- Stargazers count: 0.807%
- Average: 0.97%
- Forks count: 4.819%
Maintainers (1)
- ijl
Advisories:
- orjson does not limit recursion for deeply nested JSON documents
- orjson does not limit recursion for deeply nested JSON documents

alpine-v3.18: py3-orjson-pyc

Precompiled Python bytecode for py3-orjson

Homepage: https://github.com/ijl/orjson
Licenses: Apache-2.0 AND MIT
Latest release: 3.8.14-r0 (published almost 3 years ago)
Last Synced: 2026-04-11T22:05:12.201Z (about 1 month ago)
Versions: 3
Dependent Packages: 0
Dependent Repositories: 0
Rankings:
- Dependent repos count: 0.0%
- Dependent packages count: 0.0%
- Average: 2.878%
- Stargazers count: 3.227%
- Forks count: 8.284%
Maintainers (1)
- alice@ayaya.dev

alpine-v3.18: py3-orjson

Fast, correct Python JSON library supporting dataclasses, datetimes, and numpy

Homepage: https://github.com/ijl/orjson
Licenses: Apache-2.0 AND MIT
Latest release: 3.8.14-r0 (published almost 3 years ago)
Last Synced: 2026-04-01T03:39:47.363Z (about 1 month ago)
Versions: 3
Dependent Packages: 1
Dependent Repositories: 0
Rankings:
- Dependent repos count: 0.0%
- Dependent packages count: 0.0%
- Average: 2.878%
- Stargazers count: 3.227%
- Forks count: 8.284%
Maintainers (1)
- alice@ayaya.dev

alpine-edge: py3-orjson

Fast, correct Python JSON library supporting dataclasses, datetimes, and numpy

Homepage: https://github.com/ijl/orjson
Licenses: Apache-2.0 AND MIT
Latest release: 3.11.7-r0 (published 3 months ago)
Last Synced: 2026-03-06T19:21:46.198Z (2 months ago)
Versions: 42
Dependent Packages: 1
Dependent Repositories: 0
Rankings:
- Dependent repos count: 0.0%
- Stargazers count: 3.346%
- Average: 4.753%
- Dependent packages count: 6.031%
- Forks count: 9.635%
Maintainers (1)
- alpine@ptrcnull.me

alpine-edge: py3-orjson-pyc

Precompiled Python bytecode for py3-orjson

Homepage: https://github.com/ijl/orjson
Licenses: Apache-2.0 AND MIT
Latest release: 3.11.7-r1 (published about 2 months ago)
Last Synced: 2026-04-01T01:21:57.338Z (about 1 month ago)
Versions: 37
Dependent Packages: 0
Dependent Repositories: 0
Rankings:
- Dependent repos count: 0.0%
- Stargazers count: 3.332%
- Average: 6.755%
- Forks count: 9.555%
- Dependent packages count: 14.133%
Maintainers (1)
- alpine@ptrcnull.me

conda-forge.org: orjson

Homepage: https://github.com/ijl/orjson
Licenses: Apache-2.0
Latest release: 3.8.1 (published over 3 years ago)
Last Synced: 2026-04-01T16:19:07.022Z (about 1 month ago)
Versions: 50
Dependent Packages: 29
Dependent Repositories: 12
Downloads: 5,098,558 Total
Rankings:
- Dependent packages count: 2.291%
- Stargazers count: 5.206%
- Average: 7.942%
- Dependent repos count: 10.127%
- Forks count: 14.145%

pypi.org: orjson-enum-names

Homepage: https://github.com/ijl/orjson
Documentation: https://orjson-enum-names.readthedocs.io/
Licenses: apache-2.0
Latest release: 0.0.0 (published almost 4 years ago)
Last Synced: 2026-05-08T12:01:35.616Z (6 days ago)
Versions: 1
Dependent Packages: 0
Dependent Repositories: 1
Downloads: 24 Last month
Rankings:
- Stargazers count: 0.427%
- Forks count: 3.738%
- Dependent packages count: 7.373%
- Average: 18.727%
- Dependent repos count: 22.233%
- Downloads: 59.866%
Maintainers (1)
- anthonypjshaw

orjson is a fast, correct JSON library for Python. It benchmarks as the fastest Python library for JSON and is more correct than the standard json library or other third-party libraries. It serializes dataclass, datetime, numpy, and UUID instances natively.

Homepage: https://github.com/ijl/orjson
Licenses: MPL-2.0 AND (Apache-2.0 OR MIT)
Latest release: 3.11.7 (published 3 months ago)
Last Synced: 2026-03-24T16:14:42.722Z (about 2 months ago)
Versions: 8
Dependent Packages: 8
Dependent Repositories: 12
Downloads: 15,294 Total
Rankings:
- Dependent packages count: 4.055%
- Stargazers count: 12.104%
- Average: 19.482%
- Forks count: 25.2%
- Dependent repos count: 36.57%

pypi.org: hyperlight-hyperjson

Fast, correct Python JSON library supporting dataclasses, datetimes, and numpy with subinterpreter support

Homepage:
Documentation: https://hyperlight-hyperjson.readthedocs.io/
Licenses: Apache-2.0 OR MIT
Latest release: 0.1.12 (published 5 months ago)
Last Synced: 2026-05-08T12:01:35.623Z (6 days ago)
Versions: 3
Dependent Packages: 0
Dependent Repositories: 0
Downloads: 61 Last month
Rankings:
- Dependent packages count: 8.115%
- Average: 26.998%
- Dependent repos count: 45.881%
Maintainers (1)
- sc_codeum

spack.io: py-orjson

Fast, correct Python JSON library supporting dataclasses, datetimes, and numpy.

Homepage: https://github.com/ijl/orjson
Licenses: []
Latest release: 3.10.3 (published almost 2 years ago)
Last Synced: 2026-03-30T23:03:16.205Z (about 1 month ago)
Versions: 4
Dependent Packages: 2
Dependent Repositories: 0
Rankings:
- Dependent repos count: 0.0%
- Average: 28.636%
- Dependent packages count: 57.271%
Maintainers (1)
- adamjstewart

alpine-v3.20: py3-orjson

Fast, correct Python JSON library supporting dataclasses, datetimes, and numpy

Homepage: https://github.com/ijl/orjson
Licenses: Apache-2.0 AND MIT
Latest release: 3.10.1-r0 (published about 2 years ago)
Last Synced: 2026-04-10T18:03:35.156Z (about 1 month ago)
Versions: 1
Dependent Packages: 0
Dependent Repositories: 0
Rankings:
- Dependent repos count: 0.0%
- Dependent packages count: 0.0%
- Average: 100%
Maintainers (1)
- alpine@ptrcnull.me

nixpkgs-23.11: python310Packages.orjson

Fast, correct Python JSON library supporting dataclasses, datetimes, and numpy

Homepage: https://github.com/ijl/orjson
Documentation: https://github.com/NixOS/nixpkgs/blob/nixos-23.11/pkgs/development/python-modules/orjson/default.nix#L62
Licenses: Apache-2.0, MIT
Latest release: 3.9.10 (published 3 months ago)
Last Synced: 2026-04-10T22:02:46.313Z (about 1 month ago)
Versions: 1
Dependent Packages: 0
Dependent Repositories: 0
Rankings:
- Dependent repos count: 0.0%
- Dependent packages count: 0.0%
- Average: 100%
Maintainers (1)
- misuzu

alpine-v3.19: py3-orjson

Fast, correct Python JSON library supporting dataclasses, datetimes, and numpy

Homepage: https://github.com/ijl/orjson
Licenses: Apache-2.0 AND MIT
Latest release: 3.9.10-r0 (published over 2 years ago)
Last Synced: 2026-04-01T03:25:14.774Z (about 1 month ago)
Versions: 1
Dependent Packages: 0
Dependent Repositories: 0
Rankings:
- Dependent repos count: 0.0%
- Dependent packages count: 0.0%
- Average: 100%
Maintainers (1)
- alpine@ptrcnull.me

debian-13: python-orjson

Homepage: https://github.com/ijl/orjson/
Documentation: https://packages.debian.org/trixie/python-orjson
Licenses:
Latest release: 3.10.7-2 (published 3 months ago)
Last Synced: 2026-03-14T15:29:31.173Z (2 months ago)
Versions: 1
Dependent Packages: 0
Dependent Repositories: 0
Rankings:
- Dependent repos count: 0.0%
- Dependent packages count: 0.0%
- Average: 100%

alpine-v3.21: py3-orjson-pyc

Precompiled Python bytecode for py3-orjson

Homepage: https://github.com/ijl/orjson
Licenses: Apache-2.0 AND MIT
Latest release: 3.10.12-r0 (published over 1 year ago)
Last Synced: 2026-04-01T01:42:45.621Z (about 1 month ago)
Versions: 1
Dependent Packages: 0
Dependent Repositories: 0
Rankings:
- Dependent repos count: 0.0%
- Dependent packages count: 0.0%
- Average: 100%
Maintainers (1)
- alpine@ptrcnull.me

alpine-v3.21: py3-orjson

Fast, correct Python JSON library supporting dataclasses, datetimes, and numpy

Homepage: https://github.com/ijl/orjson
Licenses: Apache-2.0 AND MIT
Latest release: 3.10.12-r0 (published over 1 year ago)
Last Synced: 2026-04-01T01:46:01.647Z (about 1 month ago)
Versions: 1
Dependent Packages: 0
Dependent Repositories: 0
Rankings:
- Dependent repos count: 0.0%
- Dependent packages count: 0.0%
- Average: 100%
Maintainers (1)
- alpine@ptrcnull.me

alpine-v3.22: py3-orjson-pyc

Precompiled Python bytecode for py3-orjson

Homepage: https://github.com/ijl/orjson
Licenses: Apache-2.0 AND MIT
Latest release: 3.10.18-r0 (published about 1 year ago)
Last Synced: 2026-04-01T01:57:01.895Z (about 1 month ago)
Versions: 1
Dependent Packages: 0
Dependent Repositories: 0
Rankings:
- Dependent repos count: 0.0%
- Dependent packages count: 0.0%
- Average: 100%
Maintainers (1)
- alpine@ptrcnull.me

nixpkgs-23.11: python311Packages.orjson

Fast, correct Python JSON library supporting dataclasses, datetimes, and numpy

Homepage: https://github.com/ijl/orjson
Documentation: https://github.com/NixOS/nixpkgs/blob/nixos-23.11/pkgs/development/python-modules/orjson/default.nix#L62
Licenses: Apache-2.0, MIT
Latest release: 3.9.10 (published 3 months ago)
Last Synced: 2026-03-08T11:41:43.940Z (2 months ago)
Versions: 1
Dependent Packages: 0
Dependent Repositories: 0
Rankings:
- Dependent repos count: 0.0%
- Dependent packages count: 0.0%
- Average: 100%
Maintainers (1)
- misuzu

alpine-v3.19: py3-orjson-pyc

Precompiled Python bytecode for py3-orjson

Homepage: https://github.com/ijl/orjson
Licenses: Apache-2.0 AND MIT
Latest release: 3.9.10-r0 (published over 2 years ago)
Last Synced: 2026-04-01T03:25:13.122Z (about 1 month ago)
Versions: 1
Dependent Packages: 0
Dependent Repositories: 0
Rankings:
- Dependent repos count: 0.0%
- Dependent packages count: 0.0%
- Average: 100%
Maintainers (1)
- alpine@ptrcnull.me

alpine-v3.23: py3-orjson

Fast, correct Python JSON library supporting dataclasses, datetimes, and numpy

Homepage: https://github.com/ijl/orjson
Licenses: Apache-2.0 AND MIT
Latest release: 3.10.18-r0 (published about 1 year ago)
Last Synced: 2026-04-13T20:05:09.218Z (about 1 month ago)
Versions: 1
Dependent Packages: 0
Dependent Repositories: 0
Rankings:
- Dependent repos count: 0.0%
- Dependent packages count: 0.0%
- Average: 100%
Maintainers (1)
- alpine@ptrcnull.me

alpine-v3.22: py3-orjson

Fast, correct Python JSON library supporting dataclasses, datetimes, and numpy

Homepage: https://github.com/ijl/orjson
Licenses: Apache-2.0 AND MIT
Latest release: 3.10.18-r0 (published about 1 year ago)
Last Synced: 2026-04-01T01:57:01.470Z (about 1 month ago)
Versions: 1
Dependent Packages: 0
Dependent Repositories: 0
Rankings:
- Dependent repos count: 0.0%
- Dependent packages count: 0.0%
- Average: 100%
Maintainers (1)
- alpine@ptrcnull.me

guix: python-orjson

Python JSON library supporting dataclasses, datetimes, and numpy

Homepage: https://github.com/ijl/orjson
Documentation: https://git.savannah.gnu.org/cgit/guix.git/tree/gnu/packages/python-xyz.scm#n6625
Licenses: asl2.0, expat
Latest release: 3.9.7 (published 2 months ago)
Last Synced: 2026-04-27T16:25:04.799Z (17 days ago)
Versions: 1
Dependent Packages: 0
Dependent Repositories: 0
Rankings:
- Dependent repos count: 0.0%
- Dependent packages count: 0.0%
- Average: 100%

nixpkgs-24.11: python311Packages.orjson

Fast, correct Python JSON library supporting dataclasses, datetimes, and numpy

Homepage: https://github.com/ijl/orjson
Documentation: https://github.com/NixOS/nixpkgs/blob/nixos-24.11/pkgs/development/python-modules/orjson/default.nix#L85
Licenses: Apache-2.0, MIT
Latest release: 3.10.7 (published 3 months ago)
Last Synced: 2026-04-21T14:11:22.904Z (23 days ago)
Versions: 1
Dependent Packages: 0
Dependent Repositories: 0
Rankings:
- Dependent repos count: 0.0%
- Dependent packages count: 0.0%
- Average: 100%
Maintainers (1)
- misuzu

alpine-v3.23: py3-orjson-pyc

Precompiled Python bytecode for py3-orjson

Homepage: https://github.com/ijl/orjson
Licenses: Apache-2.0 AND MIT
Latest release: 3.10.18-r0 (published about 1 year ago)
Last Synced: 2026-04-09T12:05:43.770Z (about 1 month ago)
Versions: 1
Dependent Packages: 0
Dependent Repositories: 0
Rankings:
- Dependent repos count: 0.0%
- Dependent packages count: 0.0%
- Average: 100%
Maintainers (1)
- alpine@ptrcnull.me

nixpkgs-unstable: python313Packages.orjson

Fast, correct Python JSON library supporting dataclasses, datetimes, and numpy

Homepage: https://github.com/ijl/orjson
Documentation: https://github.com/NixOS/nixpkgs/blob/nixos-unstable/pkgs/development/python-modules/orjson/default.nix#L84
Licenses: Apache-2.0, MIT
Latest release: 3.11.5 (published 2 months ago)
Last Synced: 2026-04-08T23:01:41.250Z (about 1 month ago)
Versions: 2
Dependent Packages: 0
Dependent Repositories: 0
Rankings:
- Dependent repos count: 0.0%
- Dependent packages count: 0.0%
- Average: 100%
Maintainers (1)
- misuzu

nixpkgs-23.05: python311Packages.orjson

Fast, correct Python JSON library supporting dataclasses, datetimes, and numpy

Homepage: https://github.com/ijl/orjson
Documentation: https://github.com/NixOS/nixpkgs/blob/nixos-23.05/pkgs/development/python-modules/orjson/default.nix#L62
Licenses: Apache-2.0, MIT
Latest release: 3.8.11 (published 4 months ago)
Last Synced: 2026-04-03T09:27:41.112Z (about 1 month ago)
Versions: 1
Dependent Packages: 0
Dependent Repositories: 0
Rankings:
- Dependent repos count: 0.0%
- Dependent packages count: 0.0%
- Average: 100%
Maintainers (1)
- misuzu

nixpkgs-24.05: python311Packages.orjson

Fast, correct Python JSON library supporting dataclasses, datetimes, and numpy

Homepage: https://github.com/ijl/orjson
Documentation: https://github.com/NixOS/nixpkgs/blob/nixos-24.05/pkgs/development/python-modules/orjson/default.nix#L85
Licenses: Apache-2.0, MIT
Latest release: 3.10.1 (published 3 months ago)
Last Synced: 2026-03-09T03:05:35.485Z (2 months ago)
Versions: 1
Dependent Packages: 0
Dependent Repositories: 0
Rankings:
- Dependent repos count: 0.0%
- Dependent packages count: 0.0%
- Average: 100%
Maintainers (1)
- misuzu

nixpkgs-unstable: python314Packages.orjson

Fast, correct Python JSON library supporting dataclasses, datetimes, and numpy

Homepage: https://github.com/ijl/orjson
Documentation: https://github.com/NixOS/nixpkgs/blob/nixos-unstable/pkgs/development/python-modules/orjson/default.nix#L84
Licenses: Apache-2.0, MIT
Latest release: 3.11.5 (published 2 months ago)
Last Synced: 2026-03-05T08:07:08.827Z (2 months ago)
Versions: 2
Dependent Packages: 0
Dependent Repositories: 0
Rankings:
Maintainers (1)
- misuzu

nixpkgs-24.05: python312Packages.orjson

Fast, correct Python JSON library supporting dataclasses, datetimes, and numpy

Homepage: https://github.com/ijl/orjson
Documentation: https://github.com/NixOS/nixpkgs/blob/nixos-24.05/pkgs/development/python-modules/orjson/default.nix#L85
Licenses: Apache-2.0, MIT
Latest release: 3.10.1 (published 3 months ago)
Last Synced: 2026-03-07T13:02:31.237Z (2 months ago)
Versions: 1
Dependent Packages: 0
Dependent Repositories: 0
Rankings:
- Dependent repos count: 0.0%
- Dependent packages count: 0.0%
- Average: 100%
Maintainers (1)
- misuzu

nixpkgs-23.05: python310Packages.orjson

Fast, correct Python JSON library supporting dataclasses, datetimes, and numpy

Homepage: https://github.com/ijl/orjson
Documentation: https://github.com/NixOS/nixpkgs/blob/nixos-23.05/pkgs/development/python-modules/orjson/default.nix#L62
Licenses: Apache-2.0, MIT
Latest release: 3.8.11 (published 4 months ago)
Last Synced: 2026-04-09T21:03:50.426Z (about 1 month ago)
Versions: 1
Dependent Packages: 0
Dependent Repositories: 0
Rankings:
- Dependent repos count: 0.0%
- Dependent packages count: 0.0%
- Average: 100%
Maintainers (1)
- misuzu

nixpkgs-24.11: python312Packages.orjson

Fast, correct Python JSON library supporting dataclasses, datetimes, and numpy

Homepage: https://github.com/ijl/orjson
Documentation: https://github.com/NixOS/nixpkgs/blob/nixos-24.11/pkgs/development/python-modules/orjson/default.nix#L85
Licenses: Apache-2.0, MIT
Latest release: 3.10.7 (published 3 months ago)
Last Synced: 2026-04-09T19:02:22.968Z (about 1 month ago)
Versions: 1
Dependent Packages: 0
Dependent Repositories: 0
Rankings:
- Dependent repos count: 0.0%
- Dependent packages count: 0.0%
- Average: 100%
Maintainers (1)
- misuzu

ubuntu-24.10: python-orjson

Homepage: https://github.com/ijl/orjson/
Licenses:
Latest release: 3.9.15-1 (published 3 months ago)
Last Synced: 2026-03-13T16:18:23.020Z (2 months ago)
Versions: 1
Dependent Packages: 0
Dependent Repositories: 0
Rankings:
- Dependent repos count: 0.0%
- Dependent packages count: 0.0%
- Average: 100%

alpine-v3.20: py3-orjson-pyc

Precompiled Python bytecode for py3-orjson

Homepage: https://github.com/ijl/orjson
Licenses: Apache-2.0 AND MIT
Latest release: 3.10.1-r0 (published about 2 years ago)
Last Synced: 2026-04-10T18:03:13.521Z (about 1 month ago)
Versions: 1
Dependent Packages: 0
Dependent Repositories: 0
Rankings:
- Dependent repos count: 0.0%
- Dependent packages count: 0.0%
- Average: 100%
Maintainers (1)
- alpine@ptrcnull.me

https://github.com/ijl/orjson

Repository metadata:

Package metadata

pypi.org: orjson

alpine-v3.18: py3-orjson-pyc

alpine-v3.18: py3-orjson

alpine-edge: py3-orjson

alpine-edge: py3-orjson-pyc

conda-forge.org: orjson

pypi.org: orjson-enum-names

anaconda.org: orjson

pypi.org: hyperlight-hyperjson

spack.io: py-orjson

alpine-v3.20: py3-orjson

nixpkgs-23.11: python310Packages.orjson

alpine-v3.19: py3-orjson

debian-13: python-orjson

alpine-v3.21: py3-orjson-pyc

alpine-v3.21: py3-orjson

alpine-v3.22: py3-orjson-pyc

nixpkgs-23.11: python311Packages.orjson

alpine-v3.19: py3-orjson-pyc

alpine-v3.23: py3-orjson

alpine-v3.22: py3-orjson

guix: python-orjson

nixpkgs-24.11: python311Packages.orjson

alpine-v3.23: py3-orjson-pyc

nixpkgs-unstable: python313Packages.orjson

nixpkgs-23.05: python311Packages.orjson

nixpkgs-24.05: python311Packages.orjson

nixpkgs-unstable: python314Packages.orjson

nixpkgs-24.05: python312Packages.orjson

nixpkgs-23.05: python310Packages.orjson

nixpkgs-24.11: python312Packages.orjson

ubuntu-24.10: python-orjson

alpine-v3.20: py3-orjson-pyc