No known security advisories.
The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.
zstd has 7.7M monthly downloads and 187 GitHub stars. Version 1.5.7.3, first published in 2017.
It is stably maintained under a permissive license, last released in Jan 2026.
It is used by 85 tracked packages, including asynch, asammdf and supervisely.
GitHub topics include c, zstd and zstandard.
Package Insights
Package Risks
- No releases in 145 days despite active commits
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
80
Popularity
47
Adoption
70
Community
40
Provenance
0
How the maintenance status was determined
Last commit
32 days ago
Monthly downloads
7,688,640
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
7,688,640
Stars
187
Stars per 1k downloads
0.02
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
253,098
Month daily avg
256,288
Momentum
-1.2%
((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
•
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
177 days ago
Total releases
49
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
14
Monthly downloads
7,688,640
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
51
Issue Burden
74.9
per 1k stars
Discussions
0.0
per 1k stars
Fork Ratio
43.8%
contrib / forks
Stale Release
145d
PR Velocity
Quiet
Weekly Downloads
GitHub Stars
Not all downloads include detailed metadata. Breakdowns reflect the subset that does.
Downloads by OS
Linux
106.5K
macOS
4.6K
Windows
2.1K
Python Versions
3.12
29.9%
28.5K
3.11
18.2%
17.4K
3.13
17.7%
16.9K
3.10
17.7%
16.9K
3.8
16.5%
15.7K
Top Countries
1.
US
94.3K
US
2.
DE
5.3K
DE
3.
SG
4.4K
SG
4.
NL
3.0K
NL
5.
IE
1.7K
IE
6.
RU
1.4K
RU
7.
JP
1.2K
JP
8.
ES
1.1K
ES
9.
IN
982
IN
10.
FI
891
FI
Dependencies
0
No dependencies
Used By
85
- asynch
- asammdf
- supervisely
- mosaicml-streaming
- esm
- atopile
- everysk-lib
- chia-blockchain
- cinder
- fluid-labels
- lightnovel-crawler
- dfindexeddb
- selenium-wire-lw
- plaso
- pysisf
- logqs
- ttnn-visualizer
- strax
- oms-mqclient
- appfl
- rediskit
- event-vision-library
- league-tools
- micrologai
- deepnote-toolkit
- steamio
- lqs-client
- nearc
- imspy
- vineyard-io
- fig2sketch
- testgres-pg-probackup2
- hedgetech
- libjjs
- gxkit-dbtools
- map-with-tree
- protein-metamorphisms-is
- chik-blockchain
- simulac
- torchcache
- steam-rv
- frscript
- plato-learn
- noctyra
- opensynth-energy
- lol-voice
- armour
- deeptan-network
- deeptan
- litl
GitHub Topics
Tags from the package's GitHub repository describing what it does.
Package Information
License
BSD
First Release
August 11, 2017
Last Release
5 months ago
Last Commit
1 month ago
Latest Version
1.5.7.3
Total Releases
49
Contributors
14
Open PRs
4
Archived
No
Author
Sergey Dryabzhinsky, Anton Stuk
Python Versions
2.7
3.4
3.5
3.6
3.7
3.8
3.9
3.10
3.11
3.12
3.13
3.14
3.15
Wheels
cp27
cp310
cp311
cp312
cp313
cp314
cp38
cp39
pp311
pp37
pp39
Keywords
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh