Monthly downloads
296.5K
Weekly downloads
75.3K
GitHub stars
362
Downloads in the 30 and 7 days to October 10, 2026. Refreshed weekly.
Package Information
Latest Version
Requires Python
>=3.9
Licence
https://opensource.org/licenses/BSD-3-Clause
Last Release
9 months ago
Author
The Blosc development team
First Release
November 17, 2010
Total Releases
49
Python Versions
3
3.9
3.10
3.11
3.12
3.13
3.14
No reported malware or high/critical advisories · Details
The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.
Package Insights
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
50
Popularity
54
Adoption
74
Community
60
Provenance
0
How the maintenance status was determined
Last commit
271 days ago
Monthly downloads
296,533
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
296,533
Stars
362
Stars per 1k downloads
1.22
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
10,762
Month daily avg
9,884
Momentum
+8.9%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100More insights and metrics
Python version support tiers
requires_python
>=3.9
Cutting Edge
Minimum supported version is 3.14 or newer
Modern
Minimum supported version is 3.11 to 3.13
•
Legacy
Supports 3.10 or older (or Python 2)
Unknown
No requires_python specified or unparseable
License categories
License
https://opensource.org/licenses/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
271 days ago
Total releases
49
Releases/year
3.1
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
47
Monthly downloads
296,533
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
64
Issue Burden
2.8
per 1k stars
Discussions
0.0
per 1k stars
Fork Ratio
61.8%
contrib / forks
Stale Release
No
PR Velocity
Quiet
Not all downloads include detailed metadata. Breakdowns reflect the subset that does.
Downloads by OS
Linux
8.0K
Windows
100
macOS
66
Python Versions
3.9
60.5%
4.5K
3.14
12.1%
906
3.12
9.8%
733
3.10
9.3%
690
3.11
8.3%
617
Top Countries
1.
US
5.8K
US
2.
GB
1.5K
GB
3.
IN
267
IN
4.
SG
227
SG
5.
DE
153
DE
6.
CN
81
CN
7.
ID
65
ID
8.
JP
38
JP
9.
KR
27
KR
10.
NL
26
NL
Weekly Downloads
GitHub Stars
Dependencies
0
No dependencies
Used By
45
- totalsegmentator 65.2K/mo
- specklia 18.0K/mo
- finter 12.0K/mo
- pandahub 8.9K/mo
- strax 3.7K/mo
- cdxcore 3.2K/mo
- python-microscopy 2.7K/mo
- intern 2.6K/mo
- simwrapper 2.5K/mo
- meshparty 2.0K/mo
Data and sources
Tracking Since
September 26, 2026
Data Updated
October 11, 2026
Data Freshness
Fresh