No known security advisories.
The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.
viztracer has 1.2M monthly downloads and 8K GitHub stars. Version 1.1.1 supports Python 3.10+, first published in 2020.
It is actively maintained under a permissive license, last released in Nov 2025.
It is built on top of objprint. It is used by 16 tracked packages, including chalkruntime, pykiso and pynuttx.
GitHub topics include tracer, debugging and profiling.
Package Insights
Package Risks
- No releases in 209 days despite active commits
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
90
Popularity
81
Adoption
60
Community
45
Provenance
0
How the maintenance status was determined
Last commit
28 days ago
Monthly downloads
1,237,815
•
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
1,237,815
Stars
7,682
Stars per 1k downloads
6.21
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
28,215
Month daily avg
41,260
Momentum
-31.6%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100Python version support tiers
requires_python
>=3.10
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
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
238 days ago
Total releases
86
Releases/year
14.6
•
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
39
Monthly downloads
1,237,815
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
61
Issue Burden
2.5
per 1k stars
Discussions
2.0
per 1k stars
Fork Ratio
8.4%
contrib / forks
Stale Release
209d
PR Velocity
Quiet
Weekly Downloads
GitHub Stars
Not all downloads include detailed metadata. Breakdowns reflect the subset that does.
Downloads by OS
Linux
8.8K
macOS
262
Windows
107
Python Versions
3.11
37.2%
3.3K
3.12
29.6%
2.6K
3.10
17.6%
1.6K
3.13
13.0%
1.2K
3.14
2.7%
242
Top Countries
1.
US
10.9K
US
2.
IE
1.4K
IE
3.
DE
134
DE
4.
FI
121
FI
5.
SG
65
SG
6.
CA
44
CA
7.
RU
42
RU
8.
CN
36
CN
9.
FR
27
FR
10.
IN
22
IN
GitHub Topics
Tags from the package's GitHub repository describing what it does.
Package Information
License
Apache-2.0
First Release
August 12, 2020
Last Release
7 months ago
Last Commit
4 weeks ago
Latest Version
1.1.1
Total Releases
86
Contributors
39
Open PRs
5
Archived
No
Python Versions
3.10
3.11
3.12
3.13
3.14
Wheels
cp310
cp311
cp312
cp313
cp314
cp36
cp37
cp38
cp39
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh