Monthly downloads
4.5K
Weekly downloads
1.2K
GitHub stars
279
Downloads in the 30 and 7 days to October 10, 2026. Refreshed weekly.
Package Information
Latest Version
Requires Python
>=3.10
Licence
GNU Affero General Public License v3
Last Release
4 days ago
Author
Nextstrain developers
First Release
September 4, 2018
Total Releases
145
Python Versions
3
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
90
Popularity
55
Adoption
36
Community
90
Provenance
0
How the maintenance status was determined
Last commit
10 days ago
Monthly downloads
4,520
•
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
4,520
Stars
279
Stars per 1k downloads
61.73
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
174
Month daily avg
151
Momentum
—
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100Momentum not reported for packages with < 5,000 monthly downloads — percentages are noisy at low volume.
More insights and metrics
Python version support tiers
requires_python
>=3.10
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
GNU Affero General Public License v3
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
3 days ago
Total releases
145
Releases/year
17.9
•
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
50
Monthly downloads
4,520
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
74
Issue Burden
824.4
per 1k stars
Discussions
0.0
per 1k stars
Fork Ratio
36.5%
contrib / forks
Stale Release
No
PR Velocity
Active
Not all downloads include detailed metadata. Breakdowns reflect the subset that does.
Downloads by OS
Linux
20
Python Versions
3.11
95.0%
19
3.12
5.0%
1
Top Countries
1.
US
142
US
2.
FR
10
FR
3.
IE
10
IE
4.
DE
8
DE
5.
TW
7
TW
6.
AE
5
AE
7.
HK
4
HK
8.
CA
2
CA
9.
CN
2
CN
10.
DK
2
DK
Weekly Downloads
GitHub Stars
Dependencies
18
- bcbio-gff ==0.7.*,>=0.7.1
- biopython ==1.*,>=1.80
- cvxopt ==1.*,>=1.1.9
- docutils
-
importlib-resources
>=5.3.0
python_version < "3.11"
- isodate <0.8,>=0.6
- jsonschema ==4.*,>=4.18.0
- networkx <4,>=2.5
- numpy <3,>=1
- packaging >=19.2
- pandas <3,>=1.4.0
- phylo-treetime <0.13,>=0.11.2
- pyfastx <3.0,>=1.0.0
- python-calamine >=0.2.0
- referencing <1.0,>=0.29.1
- ruamel-yaml ==0.*
- scipy ==1.*
- xopen <3,>=2.1.0
24 optional dependencies
-
backports-zstd[dev]python_version < "3.14" and extra == "dev"
-
cram>=0.7[dev]extra == "dev"
-
deepdiff<8.0.0,>=4.3.2[dev]extra == "dev"
-
flake8<8,>=7.0.0[dev]extra == "dev"
-
freezegun>=0.3.15[dev]extra == "dev"
-
ipdb>=0.10.1[dev]extra == "dev"
-
mypy>=1.18.1[dev]extra == "dev"
-
nextstrain-sphinx-theme>=2022.5[dev]extra == "dev"
-
pandas-stubs<3,>=1.4.0[dev]extra == "dev"
-
pylint>=1.7.6[dev]extra == "dev"
-
pytest>=5.4.1[dev]extra == "dev"
-
pytest-cov>=2.8.1[dev]extra == "dev"
-
pytest-mock>=2.0.0[dev]extra == "dev"
-
recommonmark>=0.5.0[dev]extra == "dev"
-
sphinx>=2.0.1[dev]extra == "dev"
-
sphinx-argparse!=0.5.0,<0.6.0,>=0.2.5[dev]extra == "dev"
-
sphinx-autobuild>=2021.3.14[dev]extra == "dev"
-
sphinx-autodoc-typehints>=1.21.4[dev]extra == "dev"
-
sphinx-markdown-tables>=0.0.9[dev]extra == "dev"
-
sphinx-rtd-theme>=0.4.3[dev]extra == "dev"
-
sphinx-tabs>=3.5.0[dev]extra == "dev"
-
types-jsonschema==4.*,>=4.18.0[dev]extra == "dev"
-
types-setuptools[dev]extra == "dev"
-
wheel>=0.32.3[dev]extra == "dev"
Used By
0
Not used by any tracked packages
Data and sources
Tracking Since
September 26, 2026
Data Updated
October 11, 2026
Data Freshness
Fresh
Keywords