No known security advisories.
The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.
Package Insights
Score based on PyPI data only - no linked source repository
N/A
Health Score
Not available
requires GitHub data
How the maintenance status was determined
Last release
396 days ago
Monthly downloads
159,746
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
159,746
Stars
Unknown
Stars per 1k downloads
—
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
No star data — can't compute stars-to-downloads ratio.
How download momentum is calculated
Week daily avg
5,775
Month daily avg
5,325
Momentum
+8.5%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100Python version support tiers
requires_python
>=3.10.0
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
Apache 2
•
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
396 days ago
Total releases
35
Releases/year
4.0
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
Unknown
Monthly downloads
159,746
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
Contributor count is missing — this usually indicates the package has no linked GitHub repository.
Engagement
0
Issue Burden
-
per 1k stars
Discussions
-
per 1k stars
Fork Ratio
-
contrib / forks
Stale Release
No
PR Velocity
-
Weekly Downloads
GitHub Stars
Not all downloads include detailed metadata. Breakdowns reflect the subset that does.
Downloads by OS
Linux
1.5K
macOS
390
Windows
24
Python Versions
3.12
39.9%
741
3.11
25.5%
473
3.10
17.1%
317
3.13
15.2%
282
3.14
2.4%
44
Top Countries
1.
US
1.7K
US
2.
SG
57
SG
3.
CN
52
CN
4.
IE
19
IE
5.
DE
12
DE
6.
FI
11
FI
7.
CA
9
CA
8.
HK
7
HK
9.
JP
7
JP
10.
IN
6
IN
Used By
38
- qufold
- amazon-braket-algorithm-library
- kanad-compute
- bioql
- quri-parts-openfermion
- qadence
- pyliqtr
- tequila-basic
- symqnet-molopt
- quantumsymmetry
- pennylane-qchem
- vqe-pennylane
- jvmc
- symmer
- qcc-circuit-transformer
- module-sdstate
- tangelo-gc
- openfermioncirq
- qpe-toolbox
- nbed
- benchmarking-qrc
- qoro-maestro-pyscf
- onescience
- tyxonq
- orquestra-cirq
- gqex
- benchq
- qibochem
- sfopenboson
- project-sunrise
- qsimkit
- openfermionblueqat
- qmp-kit
- qmb
- qcompress
- quantum-isl
- tencirchem-ng
- qoro-pyscf
Package Information
License
Apache 2
First Release
September 22, 2017
Last Release
1 year ago
Last Commit
-
Latest Version
1.7.1
Total Releases
35
Contributors
-
Open PRs
-
Archived
-
Author
The OpenFermion Developers
Python Versions
3
3.10
3.11
3.12
3.13
Wheels
py3
Keywords
algorithms
api
application programming interface
chemistry
cirq
electronic structure
fermion
fermionic systems
google quantum
google
hamiltonians
high performance
nisq
noisy intermediate-scale quantum
python
quantum algorithms
quantum chemistry
quantum circuit simulator
quantum circuit
quantum computer simulator
quantum computing
quantum development kit
quantum programming language
quantum programming
quantum simulation
quantum
qubit hamiltonians
qubit
sdk
simulation
software development kit
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh