No known security advisories.
The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.
nanopb has 343K monthly downloads and 5K GitHub stars. Version 0.4.9.1 supports Python 2.7+, first published in 2019.
It is actively maintained under a permissive license, last released in Dec 2024.
It is built on top of protobuf. It is used by 2 tracked packages, including mesh-plugin-manager and hades-rpc.
GitHub topics include nanopb, protocol-buffers and c.
Package Insights
Package Risks
- No releases in 577 days despite active commits
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
100
Popularity
82
Adoption
75
Community
75
Provenance
0
How the maintenance status was determined
Last commit
5 days ago
Monthly downloads
342,741
•
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
342,741
Stars
5,456
Stars per 1k downloads
15.92
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
11,736
Month daily avg
11,425
Momentum
+2.7%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100Python version support tiers
requires_python
>=2.7
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
Zlib
•
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
582 days ago
Total releases
176
Releases/year
26.8
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
146
Monthly downloads
342,741
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
69
Issue Burden
13.9
per 1k stars
Discussions
0.0
per 1k stars
Fork Ratio
14.2%
contrib / forks
Stale Release
577d
PR Velocity
Quiet
Weekly Downloads
GitHub Stars
Not all downloads include detailed metadata. Breakdowns reflect the subset that does.
Downloads by OS
Linux
5.7K
Windows
11
macOS
10
Python Versions
3.12
34.2%
1.9K
3.10
31.8%
1.8K
3.13
29.6%
1.7K
3.11
3.2%
182
3.14
1.2%
69
Top Countries
1.
US
5.8K
US
2.
DE
42
DE
3.
FR
13
FR
4.
SG
9
SG
5.
SA
6
SA
6.
CN
5
CN
7.
HK
4
HK
8.
NL
3
NL
9.
CL
2
CL
10.
DK
2
DK
Dependencies
1
- protobuf >=3.19
1 optional dependencies
- grpcio-tools[grpcio-tools]
Used By
2
GitHub Topics
Tags from the package's GitHub repository describing what it does.
Package Information
License
Zlib
First Release
December 13, 2019
Last Release
1 year ago
Last Commit
6 days ago
Latest Version
0.4.9.1
Total Releases
176
Contributors
146
Open PRs
5
Archived
No
Author
Petteri Aimonen
Python Versions
2
2.7
3
3.4
3.5
3.6
3.7
3.8
3.9
3.10
3.11
3.12
3.13
Wheels
py2
py3
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh