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https://github.com/ultrajson/ultrajson

c decoder encoder json python ujson ultrajson

Score: 34.373428827054965

Last synced: about 11 hours ago
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Repository metadata:

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


Owner metadata:


GitHub Events

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Last Year

Committers metadata

Last synced: 6 days ago

Total Commits: 825
Total Committers: 90
Avg Commits per committer: 9.167
Development Distribution Score (DDS): 0.722

Commits in past year: 78
Committers in past year: 9
Avg Commits per committer in past year: 8.667
Development Distribution Score (DDS) in past year: 0.538

Name Email Commits
Hugo van Kemenade h****k 229
Brénainn Woodsend b****d@g****m 133
Jonas T?rnstr?m j****m@e****e 129
JustAnotherArchivist J****t 39
renovate[bot] 2****] 37
pre-commit-ci[bot] 6****] 34
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
Ben Beasley c****e@m****t 4
Will Ayd w****d@i****m 3
INADA Naoki i****n@k****m 3
Eugene Toder e****r@g****m 3
Jason Moiron j****n@j****t 3
Michał Górny m****y@g****g 3
kevin birch k****b@p****m 3
Philipp Otterbein p****n@g****m 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: 1 day ago

Total issues: 80
Total pull requests: 229
Average time to close issues: 11 months
Average time to close pull requests: 28 days
Total issue authors: 64
Total pull request authors: 34
Average comments per issue: 4.06
Average comments per pull request: 2.62
Merged pull request: 176
Bot issues: 1
Bot pull requests: 77

Past year issues: 17
Past year pull requests: 45
Past year average time to close issues: 27 days
Past year average time to close pull requests: 18 days
Past year issue authors: 12
Past year pull request authors: 12
Past year average comments per issue: 2.24
Past year average comments per pull request: 2.36
Past year merged pull request: 30
Past year bot issues: 0
Past year bot pull requests: 10

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

Top Issue Authors

  • hugovk (6)
  • JustAnotherArchivist (5)
  • RamseyK (4)
  • Fuyugithub (3)
  • TheShiftedBit (2)
  • MichaelSuen-thePointer (2)
  • renovate[bot] (1)
  • diefans (1)
  • MartinThoma (1)
  • telegraphic (1)
  • anbaoxu1 (1)
  • Erotemic (1)
  • 0-wiz-0 (1)
  • musicinmybrain (1)
  • goanpeca (1)

Top Pull Request Authors

  • hugovk (63)
  • renovate[bot] (55)
  • bwoodsend (24)
  • pre-commit-ci[bot] (21)
  • JustAnotherArchivist (17)
  • RamseyK (7)
  • Erotemic (6)
  • tonybaloney (2)
  • musicinmybrain (2)
  • AvdN (2)
  • timfel (2)
  • olk-m (2)
  • Nambers (2)
  • Attempt3035 (2)
  • grandnew (2)

Top Issue Labels

  • bug (6)
  • question (3)
  • wontfix (3)
  • enhancement (2)
  • release (1)
  • invalid (1)
  • help wanted (1)
  • documentation (1)
  • testing (1)

Top Pull Request Labels

  • changelog: skip (122)
  • dependencies (58)
  • changelog: Fixed (41)
  • changelog: Added (28)
  • changelog: Changed (16)
  • testing (14)
  • bug (2)
  • changelog: Removed (2)
  • documentation (2)
  • duplicate (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

nixpkgs-23.05: python311Packages.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 (5 months 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: 5.13.0-r0 (published about 1 month ago)
  • Last Synced: 2026-07-14T03:28:55.140Z (about 1 month ago)
  • Versions: 9
  • 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 about 4 years ago)
  • Last Synced: 2026-03-16T14:06:27.930Z (5 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 almost 4 years ago)
  • Last Synced: 2026-03-16T14:28:46.199Z (5 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 almost 4 years ago)
  • Last Synced: 2026-04-01T16:19:35.334Z (5 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 over 5 years ago)
  • Last Synced: 2026-03-16T14:01:42.800Z (5 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 almost 5 years ago)
  • Last Synced: 2026-03-16T14:05:16.141Z (5 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: 5.13.0 (published 2 months ago)
  • Last Synced: 2026-06-25T16:04:42.644Z (2 months ago)
  • Versions: 14
  • Dependent Packages: 6
  • Dependent Repositories: 197
  • Downloads: 337,142 Total
  • Rankings:
    • Stargazers count: 12.754%
    • Dependent repos count: 14.136%
    • Forks count: 17.425%
    • Average: 21.332%
    • Dependent packages count: 41.014%
ubuntu-24.04: ujson

  • Homepage: https://github.com/ultrajson/ultrajson
  • Licenses: other
  • Latest release: 5.9.0-1build1 (published 6 months ago)
  • Last Synced: 2026-03-13T04:13:21.355Z (6 months ago)
  • Versions: 1
  • Dependent Packages: 0
  • Dependent Repositories: 0
  • Rankings:
    • Dependent repos count: 0.0%
    • Dependent packages count: 0.0%
    • Average: 100%
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 6 months ago)
  • Last Synced: 2026-03-12T19:12:41.037Z (6 months ago)
  • Versions: 1
  • Dependent Packages: 0
  • Dependent Repositories: 0
  • Rankings:
    • Dependent repos count: 0.0%
    • Dependent packages count: 0.0%
    • Average: 100%
nixpkgs-23.05: python310Packages.ujson

Ultra fast JSON encoder and decoder

nixpkgs-23.11: python310Packages.ujson

Ultra fast JSON encoder and decoder

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 about 3 years ago)
  • Last Synced: 2026-03-20T14:17:57.500Z (5 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)
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 7 months ago)
  • Last Synced: 2026-08-24T13:49:16.481Z (1 day 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-v3.22: 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 about 2 years ago)
  • Last Synced: 2026-03-16T14:07:43.625Z (5 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-24.05: python311Packages.ujson

Ultra fast JSON encoder and decoder

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 4 months ago)
  • Last Synced: 2026-07-28T10:46:51.653Z (29 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)
gentoo-portage: dev-python/ujson

Ultra fast JSON encoder and decoder for Python

  • Homepage: https://github.com/ultrajson/ultrajson/
  • Documentation: https://packages.gentoo.org/packages/dev-python/ujson
  • Licenses: BSD
  • Latest release: 5.13.0 (published 2 months ago)
  • Last Synced: 2026-07-16T01:03:16.550Z (about 1 month ago)
  • Versions: 3
  • 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 over 2 years ago)
  • Last Synced: 2026-08-03T19:02:19.290Z (22 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)
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 6 months ago)
  • Last Synced: 2026-07-28T10:48:34.665Z (29 days ago)
  • Versions: 1
  • Dependent Packages: 0
  • Dependent Repositories: 0
  • Rankings:
    • Dependent repos count: 0.0%
    • Dependent packages count: 0.0%
    • Average: 100%
pkgsrc-netbsd-x86_64-10.1-all: textproc/py-ujson

Ultra fast JSON encoder and decoder for Python

  • Homepage: https://github.com/ultrajson/ultrajson
  • Documentation: https://pkgsrc.se/textproc/py-ujson
  • Licenses: modified-bsd
  • Latest release: 5.12.0 (published 5 months ago)
  • Last Synced: 2026-08-19T03:32:18.390Z (7 days 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 6 months ago)
  • Last Synced: 2026-03-14T09:15:36.568Z (5 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 6 months ago)
  • Last Synced: 2026-03-13T12:15:14.868Z (6 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-ujson

Fast Python JSON encoder and decoder

  • Homepage: https://github.com/ultrajson/ultrajson
  • Licenses: BSD-3-Clause
  • Latest release: 5.10.0-r0 (published about 2 years ago)
  • Last Synced: 2026-03-16T14:06:54.602Z (5 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)
ubuntu-23.04: ujson

  • Homepage: https://github.com/ultrajson/ultrajson
  • Licenses: other
  • Latest release: 5.7.0-1 (published 7 months ago)
  • Last Synced: 2026-03-12T03:12:09.840Z (6 months ago)
  • Versions: 1
  • Dependent Packages: 0
  • Dependent Repositories: 0
  • Rankings:
    • Dependent repos count: 0.0%
    • Dependent packages count: 0.0%
    • Average: 100%
nixpkgs-unstable: python314Packages.ujson

Ultra fast JSON encoder and decoder

nixpkgs-24.11: python311Packages.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 7 months ago)
  • Last Synced: 2026-03-14T10:11:54.613Z (5 months ago)
  • Versions: 1
  • Dependent Packages: 0
  • Dependent Repositories: 0
  • Rankings:
    • Dependent repos count: 0.0%
    • Dependent packages count: 0.0%
    • Average: 100%
ubuntu-22.04: ujson

  • Homepage: https://github.com/ultrajson/ultrajson
  • Licenses: other
  • Latest release: 5.1.0-1build1 (published 6 months ago)
  • Last Synced: 2026-03-13T17:36:59.645Z (6 months ago)
  • Versions: 1
  • Dependent Packages: 0
  • Dependent Repositories: 0
  • Rankings:
    • Dependent repos count: 0.0%
    • Dependent packages count: 0.0%
    • Average: 100%
guix: python-ujson

Ultra fast JSON encoder and decoder for Python

nixpkgs-24.11: python312Packages.ujson

Ultra fast JSON encoder and decoder


Dependencies

.github/workflows/benchmark.yml actions
  • actions/checkout v4 composite
  • actions/setup-python v5 composite
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  • pypa/gh-action-pypi-publish release/v1 composite
.github/workflows/fuzz.yml actions
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.github/workflows/labels.yml actions
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.github/workflows/lint.yml actions
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  • 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
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.github/workflows/test.yml actions
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pyproject.toml pypi
setup.py pypi