PyRank
milesgranger

cramjam

Your go-to for easy access to a plethora of compression algorithms, all neatly bundled in one simple installation.
PyPI GitHub
No known security advisories. The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.

cramjam has 33.4M monthly downloads and 123 GitHub stars. Version 2.11.0 supports Python 3.8+, first published in 2020.

It is stably maintained, last released in Jul 2025.

It is used by 23 tracked packages, including fastparquet, python-snappy and acryl-datahub.

GitHub topics include rust, decompression and compression.

Shared Repository
This package shares its GitHub repository (milesgranger/pyrus-cramjam) with 1 other package. Stars, forks, and other GitHub metrics reflect the entire repository.
Downloads
Day
953.3K
Week
7.5M
Month
33.4M
Stars
123
Forks
12
Issues
11
Version
2.11.0

Package Insights

What's this?
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
80
Popularity
40
Adoption
70
Community
30
Provenance
0
How the maintenance status was determined
Last commit
50 days ago
Monthly downloads
33,359,138
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
33,359,138
Stars
123
Stars per 1k downloads
0.00
• 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
1,073,765
Month daily avg
1,111,971
Momentum
-3.4%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100
Python version support tiers
requires_python
>=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
Not specified
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
Package does not declare a license.
How the release cadence was determined
Last release
343 days ago
Total releases
50
Releases/year
7.9
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
10
Monthly downloads
33,359,138
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
41
 
Issue Burden
89.4
per 1k stars
Discussions
0.0
per 1k stars
Fork Ratio
83.3%
contrib / forks
Stale Release
292d
 
PR Velocity
Quiet
 

Weekly Downloads

GitHub Stars

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

Downloads by OS

Linux 643.9K
Windows 4.2K
macOS 3.3K

Python Versions

3.12
43.5% 245.8K
3.11
21.3% 120.1K
3.10
16.0% 90.4K
3.9
10.5% 59.2K
3.8
8.8% 49.5K

Top Countries

1. US US
447.8K
2. SG SG
30.8K
3. DE DE
27.1K
4. IE IE
22.8K
5. GB GB
13.5K
6. KR KR
12.8K
7. NL NL
12.3K
8. IN IN
11.5K
9. BR BR
10.9K
10. JP JP
9.9K
GitHub Topics
Tags from the package's GitHub repository describing what it does.

Package Information

License
Unknown
First Release
March 8, 2020
Last Release
11 months ago
Last Commit
1 month ago
Latest Version
2.11.0
Total Releases
50
Contributors
10
Open PRs
4
Archived
No
Wheels
cp310 cp311 cp312 cp313 cp314 cp35 cp36 cp37 cp38 cp39 pp310 pp311 pp36 pp37 pp38 pp39
Keywords
compression decompression snappy zstd bz2 gzip lz4 brotli deflate blosc2
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh

Links