PyRank
spglib

spglib

C library for finding and handling crystal symmetries
PyPI GitHub
No known security advisories. The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.

spglib has 1.9M monthly downloads and 367 GitHub stars. Version 2.7.0 supports Python 3.9+, first published in 2014.

It is minimally maintained under a permissive license, last released in Dec 2025.

It is built on top of importlib-resources, numpy and typing-extensions. It is used by 139 tracked packages, including seekpath, pyxtal and phonopy.

Downloads
Day
26.5K
Week
310.7K
Month
1.9M
Stars
367
Forks
124
Issues
52
Version
2.7.0

Package Insights

What's this?
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
50
Popularity
56
Adoption
60
Community
80
Provenance
0
How the maintenance status was determined
Last commit
190 days ago
Monthly downloads
1,875,093
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
1,875,093
Stars
367
Stars per 1k downloads
0.20
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
44,385
Month daily avg
62,503
Momentum
-29.0%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100
Python version support tiers
requires_python
>=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
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
189 days ago
Total releases
107
Releases/year
8.8
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
35
Monthly downloads
1,875,093
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
85
 
Issue Burden
141.7
per 1k stars
Discussions
54.5
per 1k stars
Fork Ratio
28.2%
contrib / forks
Stale Release
No
 
PR Velocity
Active
 

Weekly Downloads

GitHub Stars

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

Downloads by OS

Linux 16.7K
macOS 1.3K
Windows 556

Python Versions

3.12
58.2% 10.3K
3.11
15.8% 2.8K
3.10
10.5% 1.9K
3.13
7.7% 1.4K
3.14
7.6% 1.4K

Top Countries

1. US US
14.6K
2. DE DE
998
3. SG SG
585
4. CN CN
566
5. IE IE
398
6. GB GB
256
7. HK HK
234
8. NO NO
194
9. RU RU
117
10. JP JP
110

Package Information

License
BSD-3-Clause
First Release
May 20, 2014
Last Release
6 months ago
Last Commit
6 months ago
Latest Version
2.7.0
Total Releases
107
Contributors
35
Open PRs
20
Archived
No
Python Versions
3 3.9 3.10 3.11 3.12 3.13
Wheels
cp27 cp310 cp311 cp312 cp313 cp314 cp34 cp35 cp36 cp37 cp38 cp39
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh

Links