Open source for data and AI

749 projects · 100 relicensed

nccl license, foundation and stars

ML frameworks · Custom or mixed (see the LICENSE file) (source-available) · backed by Nvidia · 5,202 stars

GitHub

Optimized primitives for collective multi-GPU communication

License history

LICENSE file

Custom or mixed (see the LICENSE file) No license change recorded since the repository was created in 2015.

Latest release

No GitHub releases published; the project releases elsewhere (tags or its own site).

About and history
Repository
NVIDIA/nccl · created Nov 14, 2015
Website
docs.nvidia.com/deeplearning/nccl/user-guide/docs/index.html
Language
C++
Foundation
None; run by Nvidia
Company
Nvidia · on Companies · on Acquisitions · on awards · on blogs · on certifications · on Quarterly · on Mainstage · on Leaders · on Arena · on marketplaces · on papers · on Allied · on Paydays · on predictions · on quotes · on Releases · on TechConf · on training · on Hotlist
GitHub detects
NOASSERTION (a custom or multi-license file; the license above is read from the file itself)
Stars per week
14 (GitHub weekly snapshots)

Weekly snapshots

Week ofStars
Nov 2, 20265,202
Oct 19, 20265,180
Oct 12, 20265,166
Sep 28, 20265,134
Sep 21, 20265,117

Changes

Stars per weekNov 3, 2026

Gains about 14 stars a week, down from 16.

Stars per weekOct 16, 2026

Gains about 16 stars a week, down from 17.

Stars per weekOct 4, 2026

Gains about 17 stars a week.

TrackedSep 25, 2026

Now tracked, from NVIDIA/nccl on GitHub.