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https://github.com/ultrajson/ultrajson

c decoder encoder json python ujson ultrajson

Score: 34.39130075469221

Last synced: about 23 hours ago
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Repository metadata:

Ultra fast JSON decoder and encoder written in C with Python bindings


Owner metadata:


GitHub Events

Total
Last Year

Committers metadata

Last synced: 5 days ago

Total Commits: 780
Total Committers: 90
Avg Commits per committer: 8.667
Development Distribution Score (DDS): 0.722

Commits in past year: 48
Committers in past year: 9
Avg Commits per committer in past year: 5.333
Development Distribution Score (DDS) in past year: 0.646

Name Email Commits
Hugo van Kemenade h****k 217
Jonas T?rnstr?m j****m@e****e 129
bwoodsend 3****d 106
JustAnotherArchivist J****t 39
renovate[bot] 2****] 33
pre-commit-ci[bot] 6****] 33
Jonas Tarnstrom j****m@e****m 29
Joakim Hamren j****n@g****m 22
joncrall j****l@k****m 16
Kieran O'Mahony k****m@g****m 13
Eric Le Lay e****y@m****g 7
Mikhail Sychev m****v@g****m 7
Tim Dawborn t****n@g****m 6
Joakim Hamren j****n@e****m 6
David W.H. Swenson d****s@h****t 5
Hong Minhee m****e@d****r 5
Tim Felgentreff t****f@g****m 4
unknown J****s@W****) 4
Mario Garcia-Armas m****s@f****m 4
Romulo A. Ceccon r****n@g****m 4
Will Ayd w****d@i****m 3
INADA Naoki i****n@k****m 3
Ben Beasley c****e@m****t 3
Eugene Toder e****r@g****m 3
Jason Moiron j****n@j****t 3
kevin birch k****b@p****m 3
Philipp Otterbein p****n@g****m 3
Michał Górny m****y@g****g 3
Mikhail Borisov b****l@g****m 2
Sami Salonen s****n@a****m 2
and 60 more...

Issue and Pull Request metadata

Last synced: 4 days ago

Total issues: 72
Total pull requests: 209
Average time to close issues: about 1 year
Average time to close pull requests: 28 days
Total issue authors: 58
Total pull request authors: 33
Average comments per issue: 4.35
Average comments per pull request: 2.61
Merged pull request: 157
Bot issues: 1
Bot pull requests: 72

Past year issues: 13
Past year pull requests: 39
Past year average time to close issues: 12 days
Past year average time to close pull requests: 1 day
Past year issue authors: 10
Past year pull request authors: 11
Past year average comments per issue: 2.46
Past year average comments per pull request: 1.64
Past year merged pull request: 18
Past year bot issues: 0
Past year bot pull requests: 12

More stats: https://issues.ecosyste.ms/repositories/lookup?url=https://github.com/ultrajson/ultrajson

Top Issue Authors

  • hugovk (6)
  • JustAnotherArchivist (5)
  • RamseyK (4)
  • TheShiftedBit (2)
  • MichaelSuen-thePointer (2)
  • eugene-bright (1)
  • inferno-chromium (1)
  • renovate[bot] (1)
  • diefans (1)
  • MartinThoma (1)
  • telegraphic (1)
  • anbaoxu1 (1)
  • Erotemic (1)
  • 0-wiz-0 (1)
  • musicinmybrain (1)

Top Pull Request Authors

  • hugovk (57)
  • renovate[bot] (51)
  • pre-commit-ci[bot] (20)
  • bwoodsend (17)
  • JustAnotherArchivist (17)
  • RamseyK (7)
  • Erotemic (6)
  • tonybaloney (2)
  • AvdN (2)
  • timfel (2)
  • olk-m (2)
  • Nambers (2)
  • Attempt3035 (2)
  • grandnew (2)
  • peter-varo-hx (2)

Top Issue Labels

  • bug (5)
  • question (3)
  • wontfix (3)
  • enhancement (2)
  • release (1)
  • invalid (1)
  • help wanted (1)
  • documentation (1)
  • testing (1)

Top Pull Request Labels

  • changelog: skip (113)
  • dependencies (54)
  • changelog: Fixed (37)
  • changelog: Added (25)
  • changelog: Changed (14)
  • testing (14)
  • bug (2)
  • documentation (2)
  • duplicate (1)
  • changelog: Removed (1)
  • enhancement (1)
  • go (1)

Package metadata

nixpkgs-23.11: python311Packages.ujson

Ultra fast JSON encoder and decoder

nixpkgs-24.05: python312Packages.ujson

Ultra fast JSON encoder and decoder

nixpkgs-unstable: python313Packages.ujson

Ultra fast JSON encoder and decoder

pypi.org: ujson

Ultra fast JSON encoder and decoder for Python

alpine-v3.18: py3-ujson

Fast Python JSON encoder and decoder

  • Homepage: https://github.com/ultrajson/ultrajson
  • Licenses: BSD-3-Clause
  • Latest release: 5.7.0-r0 (published over 3 years ago)
  • Last Synced: 2026-04-09T02:09:22.071Z (about 1 month ago)
  • Versions: 1
  • Dependent Packages: 0
  • Dependent Repositories: 0
  • Rankings:
    • Dependent repos count: 0.0%
    • Dependent packages count: 0.0%
    • Average: 1.967%
    • Stargazers count: 3.576%
    • Forks count: 4.294%
  • Maintainers (1)
alpine-edge: py3-ujson

Fast Python JSON encoder and decoder

  • Homepage: https://github.com/ultrajson/ultrajson
  • Licenses: BSD-3-Clause AND TCL
  • Latest release: 5.12.1-r0 (published 5 days ago)
  • Last Synced: 2026-05-12T01:03:30.590Z (5 days ago)
  • Versions: 8
  • Dependent Packages: 4
  • Dependent Repositories: 0
  • Rankings:
    • Dependent repos count: 0.0%
    • Dependent packages count: 1.745%
    • Average: 2.627%
    • Stargazers count: 3.491%
    • Forks count: 5.272%
  • Maintainers (1)
alpine-v3.16: py3-ujson

Fast Python JSON encoder and decoder

  • Homepage: https://github.com/ultrajson/ultrajson
  • Licenses: BSD-3-Clause
  • Latest release: 5.4.0-r0 (published almost 4 years ago)
  • Last Synced: 2026-03-16T14:06:27.930Z (2 months ago)
  • Versions: 1
  • Dependent Packages: 6
  • Dependent Repositories: 0
  • Rankings:
    • Dependent repos count: 0.0%
    • Stargazers count: 2.753%
    • Average: 2.806%
    • Forks count: 3.363%
    • Dependent packages count: 5.107%
  • Maintainers (1)
alpine-v3.17: py3-ujson

Fast Python JSON encoder and decoder

  • Homepage: https://github.com/ultrajson/ultrajson
  • Licenses: BSD-3-Clause
  • Latest release: 5.5.0-r0 (published over 3 years ago)
  • Last Synced: 2026-03-16T14:28:46.199Z (2 months ago)
  • Versions: 1
  • Dependent Packages: 5
  • Dependent Repositories: 0
  • Rankings:
    • Dependent repos count: 0.0%
    • Stargazers count: 3.273%
    • Average: 3.454%
    • Forks count: 3.868%
    • Dependent packages count: 6.675%
  • Maintainers (1)
conda-forge.org: ujson

  • Homepage: https://github.com/ultrajson/ultrajson
  • Licenses: BSD-3-Clause
  • Latest release: 5.5.0 (published over 3 years ago)
  • Last Synced: 2026-04-01T16:19:35.334Z (about 2 months ago)
  • Versions: 18
  • Dependent Packages: 46
  • Dependent Repositories: 197
  • Downloads: 7,718,675 Total
  • Rankings:
    • Dependent packages count: 1.547%
    • Dependent repos count: 2.441%
    • Average: 4.582%
    • Stargazers count: 5.645%
    • Forks count: 8.695%
alpine-v3.14: py3-ujson

Fast Python JSON encoder and decoder

  • Homepage: https://github.com/ultrajson/ultrajson
  • Licenses: BSD-3-Clause
  • Latest release: 4.0.2-r1 (published about 5 years ago)
  • Last Synced: 2026-03-16T14:01:42.800Z (2 months ago)
  • Versions: 1
  • Dependent Packages: 1
  • Dependent Repositories: 0
  • Rankings:
    • Dependent repos count: 0.0%
    • Stargazers count: 2.514%
    • Forks count: 3.229%
    • Average: 6.856%
    • Dependent packages count: 21.681%
  • Maintainers (1)
alpine-v3.15: py3-ujson

Fast Python JSON encoder and decoder

  • Homepage: https://github.com/ultrajson/ultrajson
  • Licenses: BSD-3-Clause
  • Latest release: 4.1.0-r0 (published over 4 years ago)
  • Last Synced: 2026-03-16T14:05:16.141Z (2 months ago)
  • Versions: 1
  • Dependent Packages: 0
  • Dependent Repositories: 0
  • Rankings:
    • Dependent repos count: 0.0%
    • Stargazers count: 2.674%
    • Forks count: 3.342%
    • Average: 7.9%
    • Dependent packages count: 25.585%
  • Maintainers (1)
anaconda.org: ujson

Ultra fast JSON decoder and encoder written in C with Python bindings

  • Homepage: https://github.com/ultrajson/ultrajson
  • Licenses: BSD-3-Clause
  • Latest release: 5.11.0 (published 6 months ago)
  • Last Synced: 2026-03-14T16:01:24.507Z (2 months ago)
  • Versions: 13
  • Dependent Packages: 6
  • Dependent Repositories: 197
  • Downloads: 328,526 Total
  • Rankings:
    • Stargazers count: 12.754%
    • Dependent repos count: 14.136%
    • Forks count: 17.425%
    • Average: 21.332%
    • Dependent packages count: 41.014%
alpine-v3.23: py3-ujson

Fast Python JSON encoder and decoder

  • Homepage: https://github.com/ultrajson/ultrajson
  • Licenses: BSD-3-Clause AND TCL
  • Latest release: 5.12.0-r0 (published 19 days ago)
  • Last Synced: 2026-04-28T07:34:59.830Z (19 days ago)
  • Versions: 2
  • Dependent Packages: 0
  • Dependent Repositories: 0
  • Rankings:
    • Dependent repos count: 0.0%
    • Dependent packages count: 0.0%
    • Average: 100%
  • Maintainers (1)
nixpkgs-23.05: python310Packages.ujson

Ultra fast JSON encoder and decoder

ubuntu-23.04: ujson

  • Homepage: https://github.com/ultrajson/ultrajson
  • Licenses: other
  • Latest release: 5.7.0-1 (published 3 months ago)
  • Last Synced: 2026-03-12T03:12:09.840Z (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-ujson

Fast Python JSON encoder and decoder

  • Homepage: https://github.com/ultrajson/ultrajson
  • Licenses: BSD-3-Clause
  • Latest release: 5.9.0-r1 (published about 2 years ago)
  • Last Synced: 2026-03-20T15:14:33.907Z (about 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)
guix: python-ujson

Ultra fast JSON encoder and decoder for Python

nixpkgs-23.11: python310Packages.ujson

Ultra fast JSON encoder and decoder

debian-13: ujson

  • Homepage: https://github.com/ultrajson/ultrajson
  • Documentation: https://packages.debian.org/trixie/ujson
  • Licenses: other
  • Latest release: 5.10.0-1 (published 3 months ago)
  • Last Synced: 2026-03-12T19:12:41.037Z (2 months ago)
  • Versions: 1
  • Dependent Packages: 0
  • Dependent Repositories: 0
  • Rankings:
    • Dependent repos count: 0.0%
    • Dependent packages count: 0.0%
    • Average: 100%
ubuntu-24.04: ujson

  • Homepage: https://github.com/ultrajson/ultrajson
  • Licenses: other
  • Latest release: 5.9.0-1build1 (published 3 months ago)
  • Last Synced: 2026-03-13T04:13:21.355Z (2 months ago)
  • Versions: 1
  • Dependent Packages: 0
  • Dependent Repositories: 0
  • Rankings:
    • Dependent repos count: 0.0%
    • Dependent packages count: 0.0%
    • Average: 100%
debian-12: ujson

  • Homepage: https://github.com/ultrajson/ultrajson
  • Documentation: https://packages.debian.org/bookworm/ujson
  • Licenses: other
  • Latest release: 5.7.0-1 (published 3 months ago)
  • Last Synced: 2026-03-14T02:28:19.744Z (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-v3.22: py3-ujson

Fast Python JSON encoder and decoder

  • Homepage: https://github.com/ultrajson/ultrajson
  • Licenses: BSD-3-Clause
  • Latest release: 5.10.0-r0 (published almost 2 years ago)
  • Last Synced: 2026-03-16T14:07:43.625Z (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)
alpine-v3.21: py3-ujson

Fast Python JSON encoder and decoder

  • Homepage: https://github.com/ultrajson/ultrajson
  • Licenses: BSD-3-Clause
  • Latest release: 5.10.0-r0 (published almost 2 years ago)
  • Last Synced: 2026-03-16T14:06:54.602Z (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)
alpine-v3.19: py3-ujson

Fast Python JSON encoder and decoder

  • Homepage: https://github.com/ultrajson/ultrajson
  • Licenses: BSD-3-Clause
  • Latest release: 5.8.0-r0 (published almost 3 years ago)
  • Last Synced: 2026-03-20T14:17:57.500Z (about 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)
nixpkgs-23.05: python311Packages.ujson

Ultra fast JSON encoder and decoder

nixpkgs-24.11: python312Packages.ujson

Ultra fast JSON encoder and decoder

nixpkgs-24.05: python311Packages.ujson

Ultra fast JSON encoder and decoder

nixpkgs-unstable: python314Packages.ujson

Ultra fast JSON encoder and decoder

debian-11: ujson

  • Homepage: https://github.com/ultrajson/ultrajson
  • Documentation: https://packages.debian.org/bullseye/ujson
  • Licenses: other
  • Latest release: 4.0.2-1 (published 3 months ago)
  • Last Synced: 2026-03-14T10:11:54.613Z (2 months ago)
  • Versions: 1
  • Dependent Packages: 0
  • Dependent Repositories: 0
  • Rankings:
    • Dependent repos count: 0.0%
    • Dependent packages count: 0.0%
    • Average: 100%
ubuntu-23.10: ujson

  • Homepage: https://github.com/ultrajson/ultrajson
  • Licenses: other
  • Latest release: 5.8.0-1 (published 3 months ago)
  • Last Synced: 2026-03-14T09:15:36.568Z (2 months ago)
  • Versions: 1
  • Dependent Packages: 0
  • Dependent Repositories: 0
  • Rankings:
    • Dependent repos count: 0.0%
    • Dependent packages count: 0.0%
    • Average: 100%
registry.bazel.build: ultrajson

  • Homepage: https://github.com/ultrajson/ultrajson
  • Documentation: https://registry.bazel.build/docs/ultrajson
  • Licenses: other
  • Latest release: 5.10.0 (published 4 months ago)
  • Last Synced: 2026-05-11T18:34:35.396Z (6 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)
nixpkgs-24.11: python311Packages.ujson

Ultra fast JSON encoder and decoder

ubuntu-22.04: ujson

  • Homepage: https://github.com/ultrajson/ultrajson
  • Licenses: other
  • Latest release: 5.1.0-1build1 (published 3 months ago)
  • Last Synced: 2026-03-13T17:36:59.645Z (2 months ago)
  • Versions: 1
  • Dependent Packages: 0
  • Dependent Repositories: 0
  • Rankings:
    • Dependent repos count: 0.0%
    • Dependent packages count: 0.0%
    • Average: 100%
ubuntu-24.10: ujson

  • Homepage: https://github.com/ultrajson/ultrajson
  • Licenses: other
  • Latest release: 5.10.0-1 (published 3 months ago)
  • Last Synced: 2026-03-13T12:15:14.868Z (2 months ago)
  • Versions: 1
  • Dependent Packages: 0
  • Dependent Repositories: 0
  • Rankings:
    • Dependent repos count: 0.0%
    • Dependent packages count: 0.0%
    • Average: 100%

Dependencies

.github/workflows/benchmark.yml actions
  • actions/checkout v4 composite
  • actions/setup-python v5 composite
.github/workflows/deploy.yml actions
  • actions/checkout v4 composite
  • actions/download-artifact v4 composite
  • actions/setup-python v5 composite
  • actions/upload-artifact v4 composite
  • docker/setup-qemu-action v3 composite
  • pypa/cibuildwheel v2.16.2 composite
  • pypa/gh-action-pypi-publish release/v1 composite
.github/workflows/fuzz.yml actions
  • actions/checkout v4 composite
.github/workflows/labels.yml actions
  • actions/checkout v4 composite
  • micnncim/action-label-syncer v1 composite
.github/workflows/lint.yml actions
  • actions/checkout v4 composite
  • actions/setup-python v5 composite
  • pre-commit/action v3.0.0 composite
.github/workflows/release-drafter.yml actions
  • release-drafter/release-drafter v5 composite
.github/workflows/require-pr-label.yml actions
  • mheap/github-action-required-labels v5 composite
.github/workflows/test.yml actions
  • actions/checkout v4 composite
  • actions/setup-python v5 composite
  • docker/setup-qemu-action v3 composite
pyproject.toml pypi
setup.py pypi