PyRank
MagicStack

uvloop

Ultra fast asyncio event loop.
PyPI GitHub
No known security advisories. The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.

uvloop has 206.8M monthly downloads and 12K GitHub stars. Version 0.22.1 supports Python 3.8.1+, first published in 2016.

It is stably maintained under a permissive license, last released in Oct 2025.

It is used by 675 tracked packages, including sglang, langgraph-api and boostedblob.

GitHub topics include asyncio, async-await and async.

Downloads
Day
7.5M
Week
48.4M
Month
206.8M
Stars
11.8K
Forks
609
Issues
127
Version
0.22.1

Package Insights

What's this?
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
80
Popularity
84
Adoption
80
Community
60
Provenance
0
How the maintenance status was determined
Last commit
63 days ago
Monthly downloads
206,775,336
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
206,775,336
Stars
11,847
Stars per 1k downloads
0.06
• 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
6,917,484
Month daily avg
6,892,511
Momentum
+0.4%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100
Python version support tiers
requires_python
>=3.8.1
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 License
• 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
262 days ago
Total releases
82
Releases/year
8.0
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
83
Monthly downloads
206,775,336
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
58
 
Issue Burden
10.7
per 1k stars
Discussions
0.0
per 1k stars
Fork Ratio
13.6%
contrib / forks
Stale Release
199d
 
PR Velocity
Quiet
 

Weekly Downloads

GitHub Stars

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

Downloads by OS

Linux 6.2M
macOS 72.9K
Windows 4.4K

Python Versions

3.12
67.1% 4.1M
3.11
15.5% 953.1K
3.13
8.2% 505.0K
3.14
5.1% 313.5K
3.10
4.1% 249.7K

Top Countries

1. US US
4.8M
2. SG SG
543.3K
3. DE DE
168.7K
4. IN IN
66.1K
5. HK HK
56.9K
6. JP JP
54.8K
7. NL NL
54.0K
8. GB GB
44.1K
9. FR FR
42.9K
10. IE IE
39.0K
GitHub Topics
Tags from the package's GitHub repository describing what it does.

Package Information

License
MIT License
First Release
April 12, 2016
Last Release
8 months ago
Last Commit
2 months ago
Latest Version
0.22.1
Total Releases
82
Contributors
83
Open PRs
29
Archived
No
Python Versions
3.8 3.9 3.10 3.11 3.12 3.13
Wheels
cp310 cp311 cp312 cp313 cp314 cp35 cp36 cp37 cp38 cp39
Keywords
asyncio networking
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh

Links