PyRank
explosion

cymem

💥 Cython memory pool for RAII-style memory management
PyPI GitHub Verified repo
No known security advisories. The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.

cymem has 20M monthly downloads and 461 GitHub stars. Version 2.0.13 supports Python <3.15,>=3.9, first published in 2014.

It is stably maintained under a permissive license, last released in Nov 2025.

It is used by 47 tracked packages, including spacy, thinc and preshed.

GitHub topics include cython.

Downloads
Day
630.4K
Week
4.5M
Month
20.0M
Stars
461
Forks
33
Issues
1
Version
2.0.13

Package Insights

What's this?
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
65
Popularity
52
Adoption
70
Community
20
Provenance
100
How the maintenance status was determined
Last commit
102 days ago
Monthly downloads
20,029,956
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
20,029,956
Stars
461
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
641,927
Month daily avg
667,665
Momentum
-3.9%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100
Python version support tiers
requires_python
<3.15,>=3.9
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
MIT
• 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
234 days ago
Total releases
24
Releases/year
2.0
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
12
Monthly downloads
20,029,956
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
26
 
Issue Burden
2.2
per 1k stars
Discussions
0.0
per 1k stars
Fork Ratio
36.4%
contrib / forks
Stale Release
132d
 
PR Velocity
Quiet
 

Weekly Downloads

GitHub Stars

Not all downloads include detailed metadata. Breakdowns reflect the subset that does.

Downloads by OS

Linux 374.9K
Windows 14.4K
macOS 6.4K

Python Versions

3.12
39.1% 135.4K
3.11
24.8% 86.2K
3.10
20.3% 70.5K
3.13
9.0% 31.3K
3.8
6.7% 23.3K

Top Countries

1. US US
287.9K
2. IE IE
33.2K
3. GB GB
11.7K
4. DE DE
8.8K
5. SG SG
7.7K
6. IN IN
6.4K
7. CA CA
6.2K
8. NL NL
5.0K
9. CH CH
3.9K
10. FR FR
3.0K
GitHub Topics
Tags from the package's GitHub repository describing what it does.

Package Information

License
MIT
First Release
September 25, 2014
Last Release
7 months ago
Last Commit
3 months ago
Latest Version
2.0.13
Total Releases
24
Contributors
12
Open PRs
0
Archived
No
Author
Matthew Honnibal
Python Versions
3.9 3.10 3.11 3.12 3.13 3.14
Wheels
cp27 cp310 cp311 cp312 cp313 cp314 cp35 cp36 cp37 cp38 cp39 pp38
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh

Links