No known security advisories.
The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.
pynndescent has 6.9M monthly downloads and 968 GitHub stars. Version 0.6.0, first published in 2018.
It is actively maintained under a permissive license, last released in Jan 2026.
It is built on top of joblib, llvmlite and numba. It is used by 99 tracked packages, including umap-learn, scanpy and quests.
GitHub topics include nearest-neighbor-search, knn-graphs and approximate-nearest-neighbor-search.
Package Insights
Package Risks
- No releases in 154 days despite active commits
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
90
Popularity
62
Adoption
60
Community
50
Provenance
0
How the maintenance status was determined
Last commit
24 days ago
Monthly downloads
6,925,680
•
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
6,925,680
Stars
968
Stars per 1k downloads
0.14
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
194,980
Month daily avg
230,856
Momentum
-15.5%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100Python version support tiers
requires_python
Not specified
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
Package does not declare a minimum Python version.
License categories
License
BSD-2-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
179 days ago
Total releases
33
Releases/year
4.0
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
27
Monthly downloads
6,925,680
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
55
Issue Burden
77.5
per 1k stars
Discussions
9.3
per 1k stars
Fork Ratio
25.5%
contrib / forks
Stale Release
154d
PR Velocity
Quiet
Weekly Downloads
GitHub Stars
Not all downloads include detailed metadata. Breakdowns reflect the subset that does.
Downloads by OS
Linux
83.3K
Windows
4.9K
macOS
3.2K
Python Versions
3.12
41.3%
35.6K
3.11
20.7%
17.8K
3.13
18.1%
15.6K
3.10
14.2%
12.2K
3.14
5.7%
4.9K
Top Countries
1.
US
71.9K
US
2.
DE
2.4K
DE
3.
SG
2.4K
SG
4.
CN
2.3K
CN
5.
IN
1.6K
IN
6.
NL
1.6K
NL
7.
KR
1.3K
KR
8.
IE
1.3K
IE
9.
JP
1.1K
JP
10.
ID
1.1K
ID
Used By
99
- umap-learn
- scanpy
- quests
- wisent
- matchms
- scib-metrics
- sciv
- bbknn
- mellon
- cajal
- clustassesspy
- exprmat
- bblean
- mapper-core
- scloop
- big-graph-dataset
- driada
- scboa
- bacpipe
- kompot
- hotspotsc
- vak
- emmaemb
- sc-simvar
- sce2tm
- scprint
- bolero
- stcat
- cellconsensus
- vectory
- context-packager
- nessvec
- palmettobug
- embedor
- blockingpy-core
- beastsim
- glass-box-umap
- chinaunicom-ai
- or-lib
- robobo-emotion
- backdoormbti
- spot-nmf
- scunagi
- feature-clock
- flight-genome
- gpbench
- numap
- delnx
- edubotics-core
- intelliant
GitHub Topics
Tags from the package's GitHub repository describing what it does.
Package Information
License
BSD-2-Clause
First Release
March 3, 2018
Last Release
6 months ago
Last Commit
3 weeks ago
Latest Version
0.6.0
Total Releases
33
Contributors
27
Open PRs
2
Archived
No
Python Versions
3.10
3.11
3.12
3.13
Wheels
py3
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh