PyRank
pyasn1

pyasn1

Generic ASN.1 library for Python
PyPI GitHub
No known security advisories. The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.

pyasn1 has 536.1M monthly downloads and 52 GitHub stars. Version 0.6.3 supports Python 3.8+, first published in 2009.

It is actively maintained under a permissive license, last released in Mar 2026.

It is used by 711 tracked packages, including pyasn1-modules, rsa and python-jose.

Downloads
Day
16.7M
Week
118.5M
Month
536.1M
Stars
52
Forks
34
Issues
25
Version
0.6.3

Package Insights

What's this?
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
100
Popularity
39
Adoption
70
Community
40
Provenance
0
How the maintenance status was determined
Last commit
3 days ago
Monthly downloads
536,084,782
• 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
536,084,782
Stars
52
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
16,929,894
Month daily avg
17,869,493
Momentum
-5.3%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100
Python version support tiers
requires_python
>=3.8
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
BSD-2-Clause
• 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
112 days ago
Total releases
42
Releases/year
2.5
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
Unknown
Monthly downloads
536,084,782
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
Contributor count is missing — this usually indicates the package has no linked GitHub repository.
Engagement
38
 
Issue Burden
-
per 1k stars
Discussions
-
per 1k stars
Fork Ratio
0.0%
contrib / forks
Stale Release
108d
 
PR Velocity
-
 

Weekly Downloads

GitHub Stars

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

Downloads by OS

Linux 11.2M
Windows 144.9K
macOS 104.2K

Python Versions

3.11
31.4% 3.2M
3.12
26.2% 2.7M
3.10
21.5% 2.2M
3.13
14.6% 1.5M
3.9
6.4% 657.3K

Top Countries

1. US US
8.5M
2. IN IN
412.7K
3. SG SG
375.8K
4. IE IE
367.3K
5. DE DE
300.1K
6. NL NL
197.2K
7. GB GB
188.5K
8. JP JP
175.6K
9. CA CA
118.6K
10. BE BE
105.4K

Package Information

License
BSD-2-Clause
First Release
November 23, 2009
Last Release
3 months ago
Last Commit
4 days ago
Latest Version
0.6.3
Total Releases
42
Contributors
0
Open PRs
4
Archived
No
Python Versions
3 3.8 3.9 3.10 3.11 3.12 3.13 3.14
Wheels
py2 py3
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh

Links