No known security advisories.
The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.
norfair has 106K monthly downloads and 3K GitHub stars. Version 2.3.0 supports Python <4.0,>=3.8, first published in 2020.
It is showing limited recent maintenance under a permissive license, last released in Apr 2025.
It is built on top of filterpy, importlib-metadata and numpy. It is used by 2 tracked packages, including toposync-ext-vision and asone.
GitHub topics include tracking, tracking-algorithm and kalman-filter.
Package Insights
Package Risks
- High downloads but no recent maintenance activity
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
40
Popularity
72
Adoption
70
Community
55
Provenance
0
How the maintenance status was determined
Last commit
432 days ago
Monthly downloads
105,514
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
105,514
Stars
2,661
Stars per 1k downloads
25.22
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
3,846
Month daily avg
3,517
Momentum
+9.4%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100Python version support tiers
requires_python
<4.0,>=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
BSD-3-Clause
•
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
432 days ago
Total releases
20
Releases/year
3.4
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
33
Monthly downloads
105,514
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
68
Issue Burden
8.3
per 1k stars
Discussions
4.9
per 1k stars
Fork Ratio
11.9%
contrib / forks
Stale Release
No
PR Velocity
Quiet
Weekly Downloads
GitHub Stars
Not all downloads include detailed metadata. Breakdowns reflect the subset that does.
Downloads by OS
Linux
3.8K
macOS
20
Windows
14
Python Versions
3.12
72.8%
2.8K
3.11
24.9%
962
3.13
1.3%
50
3.10
0.5%
19
3.9
0.5%
18
Top Countries
1.
SG
2.5K
SG
2.
US
912
US
3.
DE
71
DE
4.
BR
45
BR
5.
GB
32
GB
6.
AU
22
AU
7.
CA
22
CA
8.
PL
22
PL
9.
FR
20
FR
10.
UA
20
UA
Dependencies
5
- filterpy <2.0.0,>=1.4.5
- importlib-metadata ==4.8.3
- numpy <2.0.0,>=1.19.0
- rich <15.0.0,>=9.10.0
- scipy >=1.5.4
2 optional dependencies
- motmetrics[metrics]
- opencv-python[video]
Used By
2
GitHub Topics
Tags from the package's GitHub repository describing what it does.
Package Information
License
BSD-3-Clause
First Release
July 21, 2020
Last Release
1 year ago
Last Commit
1 year ago
Latest Version
2.3.0
Total Releases
20
Contributors
33
Open PRs
9
Archived
No
Author
Tryolabs
Python Versions
3
3.8
3.9
3.10
3.11
Wheels
py3
Keywords
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh