zlib

Install command: 
brew install zlib

General-purpose lossless data-compression library

https://zlib.net/

License: Zlib

Development: Pull requests

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

Formula code: zlib.rb on GitHub

Bottle (binary package) installation support provided for:

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

Current versions:

stable ✅ 1.4
head ⚡️ HEAD

Keg-only because macOS already provides this software.

GitHub Packages downloads:

Last 30 days219,089
Downloads24,633,437
Analytics install events (30 days)14,256
Downloads / install events (30 days)15.4×

Source: GitHub Packages, fetched 2026-11-07T00:49:10Z. Analytics dates: 2026-10-08 to 2026-11-07. 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
Installs14,24327,306463,377
Installs (--HEAD)1327154
Installs on Request8,53816,270115,461
Installs on Request (--HEAD)1327154
Build Errors0