PyRank
pyserial

pyserial

Python serial port access library
PyPI GitHub
No known security advisories. The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.

pyserial has 16.8M monthly downloads and 4K GitHub stars. Version 3.5, first published in 2008.

It is stably maintained under a permissive license, last released in Nov 2020.

It is used by 2,404 tracked packages, including esptool, platformio and netmiko.

GitHub topics include serial.

Downloads
Day
512.4K
Week
3.6M
Month
16.8M
Stars
3.6K
Forks
1.2K
Issues
277
Version
3.5

Package Insights

What's this?
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
55
Popularity
79
Adoption
70
Community
90
Provenance
0
How the maintenance status was determined
Last commit
129 days ago
Monthly downloads
16,813,830
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
16,813,830
Stars
3,552
Stars per 1k downloads
0.21
• 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
512,642
Month daily avg
560,461
Momentum
-8.5%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100
Python version support tiers
requires_python
Not specified
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
Package does not declare a minimum Python version.
License categories
License
BSD
• 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
2051 days ago
Total releases
15
Releases/year
0.8
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
89
Monthly downloads
16,813,830
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
87
 
Issue Burden
78.0
per 1k stars
Discussions
1.7
per 1k stars
Fork Ratio
7.7%
contrib / forks
Stale Release
1921d
 
PR Velocity
Active
 

Weekly Downloads

GitHub Stars

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

Downloads by OS

Linux 271.6K
Windows 22.4K
macOS 10.8K

Python Versions

3.12
28.9% 70.5K
3.13
28.7% 70.0K
3.11
17.1% 41.7K
3.10
13.6% 33.1K
3.14
11.7% 28.6K

Top Countries

1. US US
149.2K
2. FR FR
39.0K
3. SG SG
19.4K
4. IL IL
13.5K
5. DE DE
11.6K
6. CN CN
8.0K
7. NL NL
6.6K
8. GB GB
6.4K
9. IN IN
5.8K
10. JP JP
4.4K
GitHub Topics
Tags from the package's GitHub repository describing what it does.

Package Information

License
BSD
First Release
June 19, 2008
Last Release
5 years ago
Last Commit
4 months ago
Latest Version
3.5
Total Releases
15
Contributors
89
Open PRs
59
Archived
No
Author
Chris Liechti
Python Versions
2 2.7 3 3.4 3.5 3.6 3.7 3.8
Wheels
py2 py3
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh

Links