No known security advisories.
The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.
flwr has 169K monthly downloads and 7K GitHub stars. Version 1.32.1 supports Python <4.0,>=3.11, first published in 2020.
It is actively maintained under a permissive license, last released in Jul 2026.
It is built on top of alembic, click and cryptography. It is used by 28 tracked packages, including fedmodelkit, fedops and fed-rag.
GitHub topics include flower, federated-learning and federated-learning-framework.
Package Insights
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
100
Popularity
83
Adoption
72
Community
80
Provenance
0
How the maintenance status was determined
Last commit
3 days ago
Monthly downloads
169,212
•
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
169,212
Stars
7,015
Stars per 1k downloads
41.46
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
5,967
Month daily avg
5,640
Momentum
+5.8%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100Python version support tiers
requires_python
<4.0,>=3.11
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-2.0
•
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
5 days ago
Total releases
61
Releases/year
10.2
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
182
Monthly downloads
169,212
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
72
Issue Burden
4.7
per 1k stars
Discussions
0.0
per 1k stars
Fork Ratio
15.0%
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
3.2K
Windows
101
macOS
32
Python Versions
3.12
33.0%
1.1K
3.11
26.1%
837
3.10
25.8%
826
3.14
10.2%
328
3.13
4.9%
158
Top Countries
1.
US
2.5K
US
2.
GR
297
GR
3.
RU
122
RU
4.
SG
102
SG
5.
BR
99
BR
6.
DE
51
DE
7.
IN
47
IN
8.
CN
40
CN
9.
IR
39
IR
10.
NL
38
NL
Dependencies
19
- alembic <2.0.0,>=1.18.1
- click <9.0.0,>=8.0.0
- cryptography <47.0.0,>=46.0.7
- grpcio <2.0.0,>=1.70.0
- grpcio-health-checking <2.0.0,>=1.70.0
- iterators <0.0.3,>=0.0.2
- numpy <3.0.0,>=1.26.0
- packaging <26.0,>=24.0
- pathspec <0.13.0,>=0.12.1
- protobuf <7.0.0,>=5.28.0
- pycryptodome <4.0.0,>=3.18.0
- pyyaml <7.0.0,>=6.0.2
- requests <3.0.0,>=2.33.0
- rich <15.0.0,>=14.0.0
- sqlalchemy <3.0.0,>=2.0.45
- tomli <3.0.0,>=2.0.1
- tomli-w <2.0.0,>=1.0.0
- typer <0.21.0,>=0.13.0
- uv <0.12.0,>=0.11.15
5 optional dependencies
- browser-use[agent]
- ray[simulation]
- starlette[rest]
- trafilatura[agent]
- uvicorn[rest]
Used By
28
GitHub Topics
Tags from the package's GitHub repository describing what it does.
Package Information
License
Apache-2.0
First Release
July 13, 2020
Last Release
6 days ago
Last Commit
4 days ago
Latest Version
1.32.1
Total Releases
61
Contributors
182
Open PRs
287
Archived
No
Author
The Flower Authors
Python Versions
3
3.11
3.12
3.13
Wheels
py3
Keywords
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh