PyRank
facebookresearch

demucs

Code for the paper Hybrid Spectrogram and Waveform Source Separation
PyPI GitHub
No known security advisories. The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.

demucs has 304K monthly downloads and 10K GitHub stars. Version 4.0.1 supports Python 3.8.0+, first published in 2021.

Its repository is archived and was distributed under a permissive license, last released in Sep 2023.

It is used by 39 tracked packages, including audiocraft, fast-whisper-diarizer and allin1.

Shared Repository
This package shares its GitHub repository (facebookresearch/demucs) with 1 other package. Stars, forks, and other GitHub metrics reflect the entire repository.
Downloads
Day
7.7K
Week
72.9K
Month
303.5K
Stars
10.3K
Forks
1.5K
Issues
272
Version
4.0.1

Package Insights

What's this?
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
6
Popularity
86
Adoption
74
Community
60
Provenance
0
How the maintenance status was determined
Last commit
963 days ago
Monthly downloads
303,544
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
Repository is archived on GitHub — no further commits expected.
How the popularity category was determined
Monthly downloads
303,544
Stars
10,272
Stars per 1k downloads
33.84
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
10,418
Month daily avg
10,118
Momentum
+3.0%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100
Python version support tiers
requires_python
>=3.8.0
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
1033 days ago
Total releases
16
Releases/year
3.1
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
75
Monthly downloads
303,544
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
59
 
Issue Burden
26.5
per 1k stars
Discussions
0.0
per 1k stars
Fork Ratio
4.9%
contrib / forks
Stale Release
69d
 
PR Velocity
Quiet
 

Weekly Downloads

GitHub Stars

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

Downloads by OS

Linux 4.9K
Windows 1.6K
macOS 749

Python Versions

3.11
36.3% 2.5K
3.12
34.1% 2.4K
3.10
14.7% 1.0K
3.13
9.4% 650
3.14
5.5% 383

Top Countries

1. US US
3.8K
2. FR FR
576
3. SG SG
491
4. CN CN
210
5. JP JP
189
6. DE DE
174
7. IN IN
144
8. VN VN
142
9. KR KR
109
10. NL NL
106

Package Information

License
MIT License
First Release
April 27, 2021
Last Release
2 years ago
Last Commit
2 years ago
Latest Version
4.0.1
Total Releases
16
Contributors
75
Open PRs
3
Archived
Yes
Author
Alexandre Défossez
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh

Links