No known security advisories.
The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.
pymodbus has 1.7M monthly downloads and 3K GitHub stars. Version 3.13.1 supports Python 3.10.0+, first published in 2011.
It is actively maintained under a permissive license, last released in Jun 2026.
It is used by 214 tracked packages, including inference-gpu, inference and pystiebeleltron.
GitHub topics include modbus, modbus-rtu and modbus-tcp.
Package Insights
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
100
Popularity
78
Adoption
70
Community
90
Provenance
0
How the maintenance status was determined
Last commit
4 days ago
Monthly downloads
1,726,364
•
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
1,726,364
Stars
2,720
Stars per 1k downloads
1.58
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
54,275
Month daily avg
57,545
Momentum
-5.7%
((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
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
23 days ago
Total releases
93
Releases/year
6.1
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
184
Monthly downloads
1,726,364
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
86
Issue Burden
0.0
per 1k stars
Discussions
101.5
per 1k stars
Fork Ratio
17.6%
contrib / forks
Stale Release
No
PR Velocity
Quiet
Weekly Downloads
GitHub Stars
Not all downloads include detailed metadata. Breakdowns reflect the subset that does.
Downloads by OS
Linux
25.8K
Windows
1.8K
macOS
450
Python Versions
3.11
42.8%
11.1K
3.12
27.5%
7.1K
3.14
14.0%
3.6K
3.13
9.6%
2.5K
3.10
6.1%
1.6K
Top Countries
1.
US
17.6K
US
2.
CA
1.2K
CA
3.
DE
1.2K
DE
4.
RO
962
RO
5.
FR
890
FR
6.
CH
619
CH
7.
MY
581
MY
8.
CN
560
CN
9.
NL
532
NL
10.
IT
389
IT
Dependencies
0
22 optional dependencies
- aiohttp[simulator]
- build[development]
- codespell[development]
- coverage[development]
- pylint[development]
- pymodbus[all]
- pyserial[serial]
- pytest[development]
- pytest-aiohttp[development]
- pytest-asyncio[development]
- pytest-cov[development]
- pytest-profiling[development]
- pytest-timeout[development]
- pytest-xdist[development]
- recommonmark[documentation]
- ruff[development]
- sphinx[documentation]
- sphinx-rtd-theme[documentation]
- twine[development]
- types-pygments[development]
- types-pyserial[development]
- zuban[development]
Used By
214
- inference-gpu
- inference
- pystiebeleltron
- pyiskra
- pysaunum
- python-qube-heatpump
- pysmarty2
- pysma-plus
- pylxpweb
- nemo
- boneio
- nemo-ce
- neopool-modbus
- sigenergy2mqtt
- inference-cpu
- inference-core
- instro
- cracknuts
- idm-heatpump-api
- digimat-mbio
- benchci
- pyrobotiqgripper
- vention-popup-diverter
- gravity-controller-operator
- modpoll2mqtt
- productivity
- pysolarfocus
- vartastorage
- ot-aiops
- midas
- modpoll
- oqlos
- clickplc
- hoymiles-modbus
- modbuslibapi
- jaeger
- validatrix
- solaredge2mqtt
- arcusmodbus
- hvl-ccb
- python-airzone
- dertwin
- nemo-sensors
- pybls21
- acheron
- sunsynk
- ahio
- lvmopstools
- evse-hub
- wavinsentiomodbus
GitHub Topics
Tags from the package's GitHub repository describing what it does.
Package Information
License
BSD-3-Clause
First Release
March 1, 2011
Last Release
3 weeks ago
Last Commit
5 days ago
Latest Version
3.13.1
Total Releases
93
Contributors
184
Open PRs
1
Archived
No
Author
Galen Collins, Jan Iversen
Python Versions
3.10
3.11
3.12
3.13
3.14
Wheels
py2
py3
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh