No known security advisories.
The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.
simplejson has 61.3M monthly downloads and 2K GitHub stars. Version 4.1.1, first published in 2005.
It is actively maintained under a permissive license, last released in Apr 2026.
It is used by 896 tracked packages, including singer-sdk, dlt and choreographer.
GitHub topics include json, json-parser and json-serializer.
Package Insights
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
90
Popularity
70
Adoption
70
Community
60
Provenance
100
How the maintenance status was determined
Last commit
11 days ago
Monthly downloads
61,275,878
•
Active
Activity within 30 days
Stable
Activity within 31-180 days
Minimal
Activity within 181-365 days, or no activity data
At Risk
No activity for > 365 days, but > 10,000 monthly downloads
Archived
Repository flagged as archived on GitHub
How the popularity category was determined
Monthly downloads
61,275,878
Stars
1,710
Stars per 1k downloads
0.03
•
Industry Standard
> 10,000,000 monthly downloads
Hidden Gem
< 0.5 stars per 1k downloads and > 100,000 monthly downloads
Community Favorite
> 5 stars per 1k downloads
Rising Star
Balanced ratio of stars to downloads
Unknown
Fewer than 1,000 monthly downloads, or no star data
How download momentum is calculated
Week daily avg
1,890,533
Month daily avg
2,042,529
Momentum
-7.4%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100Python version support tiers
requires_python
!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,!=3.5.*,!=3.6.*,!=3.7.*,>=2.7
Cutting Edge
Minimum supported version is 3.12 or newer
Modern
Minimum supported version is 3.9, 3.10, or 3.11
•
Legacy
Supports 3.8 or older (or Python 2)
Unknown
No requires_python specified or unparseable
License categories
License
MIT OR AFL-2.1
•
Permissive
MIT, Apache, BSD, ISC, Unlicense, CC0, etc.
Copyleft
GPL, LGPL, AGPL, MPL, EPL, etc.
Proprietary
Commercial, all rights reserved, custom EULAs
Unknown
No license specified, or none of the above match
How the release cadence was determined
Last release
73 days ago
Total releases
111
Releases/year
5.4
Rapid
Last release within 365 days and > 12 releases/year
•
Regular
Last release within 365 days
Slow
Last release 366-730 days ago
Stalled
Last release > 730 days ago, or no releases
Unknown
No usable release date available
How contributor risk was determined
Contributors
44
Monthly downloads
61,275,878
High Load
≤ 2 contributors and ≥ 50,000 monthly downloads
Moderate Load
< 10 contributors and ≥ 500,000 monthly downloads
Low Load
< 25 contributors and ≥ 5,000,000 monthly downloads, or sole maintainer with ≥ 10,000 monthly downloads
•
Balanced
Enough contributors for the package's popularity
Unknown
No contributor data available
Engagement
63
Issue Burden
8.2
per 1k stars
Discussions
0.0
per 1k stars
Fork Ratio
12.5%
contrib / forks
Stale Release
61d
PR Velocity
Quiet
Weekly Downloads
GitHub Stars
Not all downloads include detailed metadata. Breakdowns reflect the subset that does.
Downloads by OS
Linux
1.2M
Windows
16.5K
macOS
9.9K
Python Versions
3.12
33.3%
369.8K
3.13
24.7%
274.5K
3.11
21.9%
243.7K
3.10
12.8%
142.6K
3.9
7.2%
80.4K
Top Countries
1.
US
896.3K
US
2.
IE
63.8K
IE
3.
GB
57.0K
GB
4.
NL
33.1K
NL
5.
DE
29.8K
DE
6.
AU
23.0K
AU
7.
IN
22.8K
IN
8.
SG
19.2K
SG
9.
CN
14.0K
CN
10.
IL
13.1K
IL
Dependencies
0
No dependencies
Used By
896
- singer-sdk
- dlt
- choreographer
- orbax-checkpoint
- dynamodb-json
- awslambdaric
- apache-superset
- stix2
- comet-ml
- alexapy
- ytsaurus-client
- singer-python
- tushare
- forex-python
- nipype
- bravado-core
- django-rest-swagger
- rasterstats
- python3-nmap
- exasol-integration-test-docker-environment
- glocaltokens
- yorm
- huaweicloudsdkcore
- stix2-validator
- titiler-core
- vollib
- lseg-data
- ms-swift
- voxcpm
- gffutils
- pybatfish
- xblock
- django-prbac
- abstra
- pytool
- ckanapi
- plone-app-content
- super-csv
- xblocks-contrib
- kekik
- sleap-io
- tidevice
- querysource
- mage-ai
- fava
- lab
- serializable
- pyconfig
- dojson
- mangopaysdk
GitHub Topics
Tags from the package's GitHub repository describing what it does.
Package Information
License
MIT OR AFL-2.1
First Release
December 31, 2005
Last Release
2 months ago
Last Commit
1 week ago
Latest Version
4.1.1
Total Releases
111
Contributors
44
Open PRs
4
Archived
No
Author
Bob Ippolito
Python Versions
2
2.7
3
3.8
3.9
3.10
3.11
3.12
3.13
3.14
Wheels
cp27
cp310
cp311
cp312
cp313
cp314
cp33
cp34
cp35
cp36
cp37
cp38
cp39
py3
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh