No known security advisories.
The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.
librt has 120.3M monthly downloads and 14 GitHub stars. Version 0.12.0 supports Python 3.9+, first published in 2025.
It is actively maintained under a permissive license, last released in Jun 2026.
It is used by 10 tracked packages, including mypy, strongtyping and sqlglot-mypy.
GitHub topics include mypy, mypyc and runtime.
Package Insights
Package Risks
- Moderate bus factor: only 7 contributor(s) for this download volume
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
100
Popularity
25
Adoption
70
Community
40
Provenance
100
How the maintenance status was determined
Last commit
6 days ago
Monthly downloads
120,308,046
•
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
120,308,046
Stars
14
Stars per 1k downloads
0.00
•
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
3,968,093
Month daily avg
4,010,268
Momentum
-1.1%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100Python version support tiers
requires_python
>=3.9
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
MIT
•
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
6 days ago
Total releases
29
Releases/year
35.9
•
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
7
Monthly downloads
120,308,046
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
40
Issue Burden
-
per 1k stars
Discussions
-
per 1k stars
Fork Ratio
100.0%
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
2.6M
Windows
66.2K
macOS
53.9K
Python Versions
3.12
50.3%
1.3M
3.11
18.6%
477.7K
3.13
13.2%
338.0K
3.10
9.8%
250.6K
3.14
8.1%
206.3K
Top Countries
1.
US
1.9M
US
2.
SG
444.5K
SG
3.
DE
84.5K
DE
4.
IE
29.0K
IE
5.
NL
27.2K
NL
6.
JP
26.5K
JP
7.
GB
23.4K
GB
8.
FR
19.4K
FR
9.
AU
16.8K
AU
10.
IN
12.9K
IN
Dependencies
0
No dependencies
Package Information
License
MIT
First Release
September 14, 2025
Last Release
1 week ago
Last Commit
1 week ago
Latest Version
0.12.0
Total Releases
29
Contributors
7
Open PRs
0
Archived
No
Python Versions
3
3.9
3.10
3.11
3.12
3.13
3.14
Wheels
cp310
cp311
cp312
cp313
cp314
cp39
py3
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh