No known security advisories.
The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.
skl2onnx has 2M monthly downloads and 625 GitHub stars. Version 1.20.0 supports Python 3.8+, first published in 2019.
It is stably maintained under a permissive license, last released in Jan 2026.
It is built on top of onnx and scikit-learn. It is used by 47 tracked packages, including onnxmltools, aimodelshare and azureml-automl-runtime.
GitHub topics include scikit-learn and onnx.
Package Insights
Package Risks
- No releases in 112 days despite active commits
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
80
Popularity
60
Adoption
80
Community
70
Provenance
100
How the maintenance status was determined
Last commit
46 days ago
Monthly downloads
1,993,649
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
1,993,649
Stars
625
Stars per 1k downloads
0.31
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
67,888
Month daily avg
66,455
Momentum
+2.2%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100Python version support tiers
requires_python
>=3.8
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
Apache License v2.0
•
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
158 days ago
Total releases
41
Releases/year
5.5
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
67
Monthly downloads
1,993,649
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
66
Issue Burden
137.6
per 1k stars
Discussions
0.0
per 1k stars
Fork Ratio
53.2%
contrib / forks
Stale Release
112d
PR Velocity
Quiet
Weekly Downloads
GitHub Stars
Not all downloads include detailed metadata. Breakdowns reflect the subset that does.
Downloads by OS
Linux
41.2K
macOS
1.1K
Windows
662
Python Versions
3.7
38.5%
15.7K
3.10
27.4%
11.2K
3.12
16.2%
6.6K
3.11
14.7%
6.0K
3.14
3.2%
1.3K
Top Countries
1.
US
36.5K
US
2.
NL
2.5K
NL
3.
SG
1.1K
SG
4.
JP
831
JP
5.
DE
450
DE
6.
IE
291
IE
7.
KR
182
KR
8.
GB
167
GB
9.
FR
142
FR
10.
CA
118
CA
Dependencies
2
- onnx >=1.2.1
- scikit-learn >=1.1
Used By
47
- onnxmltools
- aimodelshare
- azureml-automl-runtime
- azureml-training-tabular
- azureml-train-automl-runtime
- modeci-mdf
- mindstudio-probe
- flytekitplugins-onnxscikitlearn
- fink-anomaly-detection-model
- orbital
- mcreweight
- cpg-workflows
- kailash-ml
- jaqpotpy
- dquant
- elemeno-ai-sdk
- gnomad
- justembed
- ecov003-l3t-l4t-jet
- autopeptideml
- mmm-fair
- skjson
- engram-trainer
- esr-dt-model
- edgeflow
- batabyal
- djangoldp-ai-agents
- asari
- hatesonar
- geoengine
- ctrain
- azure-mlops-helper
- mmm-fair-cli
- mlcli-toolkit
- leukquant
- better-experimentation
- setfitonnx
- ml-experimentation
- freewillai
- nvidia-tao-byom
- stitchnet
- planetsca
- ait-surgeon
- prog2onnx
- open-autonlu
- magnes-artifact-removal
- willaya-ml2
Package Information
License
Apache License v2.0
First Release
January 24, 2019
Last Release
5 months ago
Last Commit
1 month ago
Latest Version
1.20.0
Total Releases
41
Contributors
67
Open PRs
4
Archived
No
Python Versions
3.8
3.9
3.10
3.11
3.12
3.13
Wheels
py2
py3
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh