openblas

Install command:
brew install openblas

Optimized BLAS library

https://www.openblas.net/

License: BSD-3-Clause AND BSD-2-Clause-Views AND BSD-3-Clause-Open-MPI AND BSD-2-Clause

Development: Pull requests

Formula JSON API: /api/formula/openblas.json

Formula code: openblas.rb on GitHub

Bottle (binary package) installation support provided for:

macOS on
Apple Silicon
golden gate ✅
tahoe ✅
sequoia ✅
sonoma ✅
macOS on
Intel
sonoma ✅
Linux ARM64 ✅
x86_64 ✅

Current versions:

stable ✅ 0.3.34
head ⚡️ HEAD

Keg-only because macOS provides BLAS in Accelerate.framework.

Depends on:

gcc 16.2.0 GNU compiler collection
libomp 23.1.5 LLVM's OpenMP runtime library

GitHub Packages downloads:

Last 30 days219,962
Downloads14,198,000
Analytics install events (30 days)11,850
Downloads / install events (30 days)18.6×

Source: GitHub Packages, fetched 2026-11-15T00:53:51Z. Analytics dates: 2026-10-16 to 2026-11-15. Totals exclude downloads from Bintray before the migration to GitHub Packages. Downloads and install attempts measure different things; the difference does not count analytics opt-outs. Definitions and limitations.

Analytics:

30 days90 days365 days
Installs11,84931,443281,352
Installs (--HEAD)1863
Installs on Request1,1573,26733,952
Installs on Request (--HEAD)1658
Build Errors7