Zircon
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One ecosystem. Everyone's ready.

Players get the launcher, server owners get the manager, and communities deploy with Zircon Cloud.

Zircon Launcher

v0.4.21 · Windows · macOS · Linux
Free & open source Multi-Platform Release

The companion launcher for Zircon servers. Sign in with Microsoft, add your server, and hit PLAY — the exact mods sync automatically, verified against Modrinth & CurseForge.

Detected Platform: Windows
Download for Windows (.exe) .msi installer

Compatible with 64-bit Windows 10 and 11. Includes NSIS installer and WiX MSI packages.

Download for macOS (.dmg) .app bundle (.tar.gz)

Native Apple Disk Image (.dmg). Supports Apple Silicon (M1/M2/M3/M4) and Intel Macs running macOS 11.0+.

Download .AppImage (Universal) .deb (Debian/Ubuntu) .rpm (Fedora/RHEL)

Portable .AppImage works across Arch, Fedora, openSUSE, Ubuntu, Debian, and Manjaro. Native .deb and .rpm packages also available.

First-time opening on macOS, Windows, or Linux? Read setup tips →
macOS Gatekeeper: If macOS displays a notice that the app is unverified or damaged, open your Mac's Terminal and run:
xattr -cr /Applications/Zircon.app
Windows SmartScreen: If the blue "Windows protected your PC" screen appears, click More info and select Run anyway.
Linux .AppImage: Make the downloaded AppImage executable:
chmod +x Zircon*.AppImage

System Requirements

Supported on all major desktop operating systems:

  • Windows 10/11, macOS 11+, or Linux (64-bit x86_64 or Apple Silicon)
  • A Microsoft account with Minecraft: Java Edition — sign-in is the official Microsoft flow
  • 4 GB+ RAM recommended for modded packs — the launcher includes a built-in RAM slider
What it does for you: one-click join · exact mod sync · Modrinth & CurseForge verified downloads · per-server isolation · skin customizer with 3D preview · offline single-player instances · shader & resource pack support.
Not affiliated with Mojang or Microsoft. You must own Minecraft Java Edition. There is no offline/unauthenticated mode for online play.

Zircon Server Manager

v0.4.21 · Windows & Linux
Self-hosted Linux & Windows Ready

The server-side daemon behind every Zircon server: exact mod sync for your players, Modrinth & CurseForge integration, single public TCP port multiplexer, live console, automated backups, and a bundled web admin dashboard.

Download for Linux (.tar.gz) Windows (.zip) Source

Production ready for Ubuntu, Debian, Fedora, RHEL, Arch Linux and Windows Server. Runs standalone as a systemd service or background process.

Setup Guide

  1. Install — download the manager and run it. A secure admin password is generated and printed to the console on first start.
  2. Open the dashboard at http://localhost:25564 and sign in with that password.
  3. Create an instance & add mods — the manager downloads the server JAR for you. Accept the EULA, pick your Minecraft & loader versions, and search & install mods directly from Modrinth and CurseForge.
  4. Start the server — one public port (25565) serves both Minecraft and HTTP. Share the address, and players join modded, ready.
Ports & firewall: expose 25565 (Minecraft + web multiplexed) and keep the admin dashboard 25564 on localhost or behind your own reverse proxy.

Build from source

The whole project is one Rust workspace. Prefer to run it yourself? The README on GitHub has build and run instructions.

View source & build guide
Turnkey Managed Cloud

Effortless Hosting. Deploy on Zircon Cloud.

Prefer not to configure port forwarding, firewall NAT rules, or maintain a physical home server? Zircon Cloud gives you fully managed servers with full configuration freedom powered by the exact same engine.

Pause-to-Sleep Engine

Suspends cleanly when empty to reduce host overhead. Automatically resumes when a player clicks connect.

Realtime WebSocket Console

Access your live terminal, CPU/RAM telemetry, player kicks/bans, and file management from any web browser.

Automatic Mod Sync

All players using Zircon Launcher automatically receive verified mods, loaders, and configs from your server manifest.

Not sure which one you need?

Players install the Launcher. If you own hardware, self-host with Server Manager. For managed hosting without hardware setup, launch on Zircon Cloud.

I'm a Player Self-Host Server Zircon Cloud