If you've chosen to run a modded Fabric server on macOS but haven't found detailed information regarding setting one up correctly, you've found it. This guide covers everything needed for you to run a modded Fabric server on your Mac, including all aspects of the Fabric server (e.g., set up, mods, allocating RAM to the Fabric server, custom branding). No doubt about it; everything is here. There will not be a second part nor an "I'll explain that next time" message in this guide, only explanations with full context and detail for anything required in maintaining your modded Fabric server.

What You'll Need

• A Mac (if you're on Windows, wrong guide — close tab)
• A stable internet connection
• A Minecraft Java Edition account
• The latest version of Java installed
• Fabric Installer
• A little bit of patience — this isn't hard but it's not a one click job either

Step 1 — Downloading Java

Before anything else you need Java installed on your Mac. Minecraft's server software runs on Java, without it nothing will work.

Head to the official Java website and download the latest version (Java 21).

https://www.oracle.com/java/technologies/downloads/#jdk26-mac

Important — you need the right version for your Mac:

• If your Mac has Apple Silicon (M1, M2, M3 etc.) download the version labelled ARM64 DMG Installer
• If your Mac has an Intel chip download the version labelled x64 DMG Installer