Zircon gives you the power of modded Minecraft without the frustration. Pick a server, hit PLAY, and every mod installs and verifies cryptographically in seconds—then gets completely out of your way.
End the 2-hour Discord argument before game night. Just hit PLAY and spawn in.
The server broadcasts its exact Bill of Materials (BOM) over port 25565 — mod IDs, version hashes, loader, and configs.
The launcher scans your local instance in milliseconds, skipping any files you already possess and flagging only what's missing.
Missing files download in parallel directly from Modrinth and CurseForge CDNs. Zero corrupt JARs, zero version mismatches.
Don't abandon your worlds, keybinds, or modpack instances. Zircon automatically detects your installed launchers and ports them losslessly in under 2 seconds.
Auto-detects modpacks, overrides, custom configs & world saves.
Imports instance trees, JVM arguments, and world saves.
Preserves MR packs, index files, and custom resource packs.
Transfers instances, custom backups & texture pack folders.
When you launch Zircon, our native Rust detector locates installed profiles on your system. Select which instances you want to import, and Zircon migrates everything into clean, isolated sandboxes.
Every feature in Zircon was designed to remove friction so you spend your night playing, not troubleshooting.
Zero modpack mismatches. When you hit PLAY, Zircon connects to the server and computes cryptographic SHA-512 hashes against official Modrinth and CurseForge CDNs. Only missing delta files are fetched in parallel. No 1GB Google Drive zip archives ever again.
Instant zero-config multiplayer. Detects active LAN games on your home Wi-Fi automatically. Playing over the internet? Share a 6-digit Join Code with automated UPnP port forwarding—no Hamachi needed.
Switching from CurseForge, Prism, Modrinth, or ATLauncher? Our native Rust importer detects your profiles and copies saves, keybinds, and mod configurations in under 2 seconds.
Turn your PC or TV into a living room console. Connect up to 4 Xbox, PlayStation, or generic Bluetooth gamepads and play modded Java Edition side-by-side with separate player profiles, skins, and viewport tiling.
Everything you've always wished other launchers had — built right into your desktop app.
Turn your PC or living room TV into a split-screen console. Connect up to 4 Xbox, PlayStation, or generic Bluetooth gamepads and play modded Java edition side-by-side with separate inventories, viewports, and skins.
Stop guessing how skins look before loading the game. Rotate your character in real-time 3D, browse thousands of trending community skins fetched directly via API, and sync directly to official Mojang servers with a single click.
No IP addresses to copy-paste. No Hamachi virtual networks. No opening router firewall ports. Whenever someone on your local Wi-Fi launches a world or server, it pops up automatically. Playing over the internet? Share a 6-digit Join Code with automated UPnP port forwarding.
Never stare at a frozen Minecraft loading screen again. While massive Forge or Fabric packs initialize textures, play built-in 2048 right in the launcher window. When the game finishes loading, dive right in while Discord Rich Presence shows your friends exactly what you're playing.
Tailor the launcher to your personal aesthetic with custom accent colors, dark palettes, and configurable view styles.
Play anywhere without an active internet connection. Import existing singleplayer worlds, allocate custom RAM, and isolate modpacks.
Add your own optional client mods, shaders, resource packs, and keybindings to any server instance without corrupting synchronization.
See why players and server communities are switching to Zircon.
| Feature | CurseForge | Prism Launcher | Zircon |
|---|---|---|---|
| Automatic Mod Sync on Join Pulls exact server mod list & config on PLAY |
❌ Manual Export/Import | ❌ Manual Export/Import | ✓ Automatic (Sub-Second) |
| Universal 1-Click Migration Auto-detects other launchers & imports saves |
❌ No Detection | ⚠️ Partial Manual Zip | ✓ 1-Click Native Rust |
| 4-Player Split-Screen Co-op Gamepad support & window quadrant tiling |
❌ Not Supported | ❌ Not Supported | ✓ Built-in Gamepad Tiling |
| Local Wi-Fi Radar & UPnP Auto-detect LAN friends & 6-digit codes |
❌ No Auto-Discovery | ❌ No Auto-Discovery | ✓ Zero-Config Radar |
| Memory & Startup Footprint Desktop engine memory overhead |
⚠️ ~400MB+ (Electron) | ⚡ ~80MB (C++) | ⚡ ~35MB (Compiled Rust) |
| Privacy & Telemetry User tracking & bundled advertisements |
❌ Ads & Analytics | ✓ Zero Telemetry | ✓ Zero Telemetry / Clean |
| Official Mojang 3D Skin Studio Real-time 3D model rotation & Mojang sync |
❌ Not Available | ❌ Not Available | ✓ Built-in 3D Studio |
The self-hosted management engine behind Zircon. No Docker headaches, no multi-port firewall nightmare. Run modded servers your players can actually connect to without tech support.
Scrolling mod sites for "the right build" and hoping it matches what your friends are running.
Manually dropping mod files into mods/ and deleting the ones that crash on launch.
Comparing configs with your friend at 1am, one mismatch at a time, while the server sits empty.
Built for people who want to play modded Minecraft with friends — not spend their evening reconciling mod versions and crash logs.
Hit PLAY and Zircon downloads the right Minecraft version and mod loader — Fabric, Quilt, Forge, or NeoForge — installs the mods, and drops you straight into the game.
Search & download mods from Modrinth and CurseForge with verified SHA-512 and fingerprint checks on every launch. Nothing missing, nothing stale.
Official Microsoft sign-in — your password goes to Microsoft, never to Zircon. No shared logins, no cracked launchers, no offline workarounds.
Saved skin selector with live 3D preview, official Mojang cloud sync, and an in-app community skin explorer pulling trending skins via API.
Servers can offer their own shaders and resource packs. Zircon applies them when you join — you just say yes once, and it's done.
Create offline single-player instances with their own mods, shaders, and texture packs. No server required — just build in peace.
One click, in your browser. Zircon uses the official Microsoft flow — your password never touches the app.
Your saved servers, most recently played first — plus recommendations. Each server brings its own mod list along.
Zircon syncs and verifies the mods from Modrinth & CurseForge, wakes the server if it's asleep, and connects you. You spawn in — fully modded, ready to go.
Zircon connects directly to Microsoft using official browser OAuth 2.0 PKCE authentication. Your credentials are never stored or transmitted to our servers. Every mod file is cryptographically validated with SHA-512 against official Modrinth & CurseForge CDNs.
Everything you need to know about getting started with Zircon.
When you join a server and hit PLAY, Zircon compares the server's published Bill of Materials manifest against your local client folder. Any missing or updated mods are verified via Modrinth & CurseForge SHA-512 hashes and fingerprints, then downloaded instantly in parallel without manual file dragging.
Yes! Zircon includes a native 1-click Universal Migration tool. It automatically detects installed directories from CurseForge, Prism Launcher, Modrinth App, and ATLauncher, letting you import your complete instance trees, saves, keybinds, and mod configurations in under two seconds.
Zircon allows you to connect up to 4 gamepads (Xbox, PlayStation, or generic Bluetooth controllers) and launch multiple isolated game windows arranged into a seamless split-screen grid on your monitor or TV. Each player controls their own character with their own gamepad.
Yes! Zircon natively supports searching, installing, and synchronizing mods directly from both Modrinth and CurseForge with zero API key configuration needed. Both repositories are fully integrated out of the box.
Yes, Zircon is source-available under the Business Source License 1.1 (BSL 1.1). Both the client launcher and the self-hosted server manager are 100% free for players, homelabbers, and gaming networks. The entire codebase is open for public inspection, self-hosting, and community contribution on GitHub.
Yes. Authentication is performed via standard Microsoft OAuth 2.0 PKCE in your default system browser. Your login credentials go directly to Microsoft's login servers and are never accessed, handled, or stored by Zircon.
Zircon natively supports Fabric, Quilt, Forge, and NeoForge. The launcher automatically installs the required mod loader version and verified Adoptium Temurin Java runtime when you launch an instance or join a server.
Download the free open-source launcher, or get the self-hosted server manager.