PyRank
python-trio

sniffio

Sniff out which async library your code is running under
PyPI GitHub
No known security advisories. The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.

sniffio has 444.7M monthly downloads and 150 GitHub stars. Version 1.3.1 supports Python 3.7+, first published in 2018.

It is stably maintained under a permissive license, last released in Feb 2024.

It is used by 1,334 tracked packages, including openai, google-genai and anthropic.

GitHub topics include async, trio and asyncio.

Downloads
Day
14.3M
Week
101.7M
Month
444.7M
Stars
150
Forks
29
Issues
8
Version
1.3.1

Package Insights

What's this?
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
45
Popularity
45
Adoption
70
Community
60
Provenance
0
How the maintenance status was determined
Last commit
122 days ago
Monthly downloads
444,664,146
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
444,664,146
Stars
150
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
14,529,045
Month daily avg
14,822,138
Momentum
-2.0%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100
Python version support tiers
requires_python
>=3.7
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
MIT OR 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
861 days ago
Total releases
6
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
59
Monthly downloads
444,664,146
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
64
 
Issue Burden
53.3
per 1k stars
Discussions
0.0
per 1k stars
Fork Ratio
203.4%
contrib / forks
Stale Release
739d
 
PR Velocity
Quiet
 

Weekly Downloads

GitHub Stars

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

Downloads by OS

Linux 10.0M
Windows 245.6K
macOS 126.9K

Python Versions

3.12
43.2% 4.2M
3.11
24.0% 2.4M
3.13
15.7% 1.5M
3.10
12.0% 1.2M
3.14
5.2% 504.3K

Top Countries

1. US US
7.3M
2. SG SG
828.3K
3. IN IN
533.1K
4. DE DE
219.4K
5. HK HK
165.6K
6. NL NL
161.9K
7. GB GB
152.2K
8. FR FR
101.4K
9. IE IE
100.1K
10. JP JP
96.0K
GitHub Topics
Tags from the package's GitHub repository describing what it does.

Package Information

License
MIT OR Apache-2.0
First Release
July 31, 2018
Last Release
2 years ago
Last Commit
4 months ago
Latest Version
1.3.1
Total Releases
6
Contributors
59
Open PRs
4
Archived
No
Wheels
py3
Keywords
async trio asyncio
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh

Links