Open-source Minecraft launcher

Clear space between
every Minecraft
instance.

Q: Is Prism Launcher free?

Yes. Prism Launcher is free software under GPL-3. Download builds for Windows, macOS, and Linux at no cost.

Q: Is Prism Launcher safe to download?

The project is open source under GPL-3 and publicly auditable. Windows SmartScreen may flag unsigned binaries because the project does not buy a commercial code signature. Use official builds from this site and confirm version 11.0.3 in the release notes.

Q: Does it work on Windows 11?

Yes. Current releases target Windows 10 and Windows 11. MSVC builds need the Visual C++ 2022 redistributable. Windows 7 and 8.1 are unsupported after version 8.0.

Q: Can I use CurseForge and Modrinth together?

Yes. The launcher connects to both platforms for mods and modpacks inside each instance, including updates after the mid-July 2026 CurseForge API changes addressed in 11.0.3.

Q: Why does antivirus flag the installer?

Unsigned binaries and game-launcher behavior often trigger heuristic alerts. Confirm you downloaded version 11.0.3 from this site, then allowlist if you trust the open-source project. See Guides and Trust.

Professional separation without the noise — mods, packs, accounts, and Java each stay in their own compartment inside a lightweight Qt shell with zero clutter bolted on.

Download for your OS Explore features

Version 11.0.3 · Released 11 Jul 2026 · GPL-3 · Windows, macOS, Linux

Create · Fabric 1.21 ATM10 · Forge Vanilla 1.20.1 Dev Quilt

Prism Launcher instance overview with edge-aligned controls and launch status

The principle

Clean boundaries for the way you
actually play

Prism Launcher is an open-source Minecraft launcher built around separation. Each instance is its own quiet zone — no shared .minecraft folder, no embedded browser shell, no ad layer between you and the game.

Version, loader, Java, worlds, and resource packs stay walled inside that instance. Switch from vanilla to Fabric, Forge, Quilt, or a 200-mod pack without anything crossing the boundary.

Get version 11.0.3

Features

Modpack lanes with clear edges

Install and update modpacks inside a single instance boundary. Prism Launcher pulls from CurseForge and Modrinth so pack files never drift into the wrong setup.

Modpack install dialog with CurseForge and Modrinth sources in Prism Launcher

Modpack update progress view inside an isolated Prism Launcher instance

Mods

Mod updates, contained

Browse Modrinth and CurseForge from one dialog, then apply changes only to the instance you selected. No more hunting folders or accidentally patching the wrong pack.

Mod browser inside Prism Launcher showing available updates for an instance

Mod update queue confirming CurseForge and Modrinth changes per instance

Instances

Instances that stay apart

Every Minecraft setup gets its own folder, Java path, memory limit, and loader. The void between instances is the feature — switch worlds without cross-contamination.

Java and memory settings panel for a single Prism Launcher instance

Interface

Lightweight. Uncluttered.

No embedded web browser. No Overwolf shell. Prism Launcher runs on Qt with minimal overhead and leaves the interface to you — custom themes, grouped instances, and a workflow that stays out of the way.

Prism Launcher main window listing isolated Minecraft instances on desktop

Who it is for

Workflows that need real separation

● Modpack players

Run ATM, Create, and performance packs side by side — each with its own Java heap and mod folder, never touching the others.

● Linux and Flatpak users

Native builds, AppImage, or Flathub (org.prismlauncher.PrismLauncher) for distro-friendly installs that keep instances cleanly partitioned on disk.

● MultiMC migrants

Import existing MultiMC instances intact, then add built-in CurseForge and Modrinth installs the old workflow handled manually.

● Mod and pack testers

Spin Forge, Fabric, Quilt, and NeoForge sandboxes in parallel. Each loader lives in its own void — nothing overwrites a shared folder.

Comparison

Prism Launcher vs the alternatives

Where each launcher draws its boundaries today. Prism inherits the MultiMC separation model and adds native mod-platform support — without ads or a browser shell.

Criterion	Prism Launcher	MultiMC	CurseForge App	Modrinth App
Isolated instances	Yes	Yes	Limited profiles	Yes
CurseForge mods and packs	Built-in	Manual import	Built-in	No
Modrinth mods and packs	Built-in	Manual import	No	Built-in
Ads / Overwolf shell	None	None	Overwolf ecosystem	None
License	GPL-3 open source	Open source	Proprietary	Open source
Per-instance Java control	Strong	Strong	Limited	Yes

Trust

Transparent by design

Source ships under GPL-3. Logo assets use CC BY-SA 4.0. Official builds cover Windows, macOS, and Linux — including Flatpak and AppImage formats.

Windows SmartScreen may appear because the project has not purchased a Microsoft code signature. That is common for unsigned open-source software. Read the full trust notes before you install.

Trust and security details

From players

What players notice in daily use

Modpack player

“Six packs, six folders, zero bleed-over. Prism updates Modrinth mods in-place without me touching anything outside that instance. Clean and boring — exactly what I want.”

Linux user

“Flatpak install, instances stay partitioned on disk. My Fabric shader pack and my Forge kitchen-sink pack never share a jar. That separation is the whole point.”

MultiMC migrant

“Imported my old instances without drama. Built-in CurseForge and Modrinth replaced the manual copy-paste workflow. Only wish the first-run Java prompt explained RAM limits more clearly.”

Parent setup

“Microsoft login worked after device-code auth. Defender flagged the installer once; after allowlisting, it has been stable on Windows 11 with two kid profiles in separate instances.”

Modpack player

“Six packs, six folders, zero bleed-over. Prism updates Modrinth mods in-place without me touching anything outside that instance. Clean and boring — exactly what I want.”

Linux user

“Flatpak install, instances stay partitioned on disk. My Fabric shader pack and my Forge kitchen-sink pack never share a jar. That separation is the whole point.”

MultiMC migrant

“Imported my old instances without drama. Built-in CurseForge and Modrinth replaced the manual copy-paste workflow. Only wish the first-run Java prompt explained RAM limits more clearly.”

Parent setup

“Microsoft login worked after device-code auth. Defender flagged the installer once; after allowlisting, it has been stable on Windows 11 with two kid profiles in separate instances.”

Quick answers

Short FAQ

Is Prism Launcher free?

Is Prism Launcher safe to download?

Does it work on Windows 11?

Can I use CurseForge and Modrinth together?

Why does antivirus flag the installer?

Open the full FAQ

Your worlds deserve space
between them. Your launcher should too.

Pick a Windows, macOS, or Linux build, scan the changelog, and review integrity notes — then install into a clean, separated workflow.

Download Prism Launcher

Community

Get involved and support the project

Get Involved

Prism Launcher is community-maintained open source. Source lives on GitHub. Join the Discord or Matrix space to talk with other players and contributors.

Other Information

Prism Launcher is open-source and licensed under GPL-3.
Prism Launcher's logo and related assets are licensed under CC BY-SA 4.0.
This static community mirror at prismlauncher.pro documents Prism Launcher. Product source remains GPL-3.