PolyMC
PolyMC is an open source Minecraft launcher for organizing multiple instances, accounts, and mods.
What PolyMC is
PolyMC is an open source Minecraft launcher for organizing multiple instances, accounts, and mods. Each instance has a separate folder for its own mods, resource packs, settings, and other files. You can install Forge, Fabric, LiteLoader, or Quilt, browse modpacks from CurseForge, Technic, FTB, FTB Legacy, and Modrinth, and add individual mods from CurseForge or Modrinth matched to the loader and game version. The launcher also manages worlds, resource packs, and shader packs, and provides access to logs and a way to stop Minecraft if it freezes or crashes. It includes Java runtime management, but users need to select the Java version for each instance manually. PolyMC is free on Linux, macOS, and Windows. The current macOS build supports Apple Silicon; Intel Mac users are directed to a legacy universal build. The project offers help through issue reports or its Discord server.
Good
- Keeps each instance's files separate
- Supports Forge, Fabric, LiteLoader, and Quilt
- Lists modpacks from five named sources
- Manages worlds, resource packs, and shader packs
- Free on Linux, macOS, and Windows
Watch out
- Java version must be selected manually
- Current macOS build is Apple Silicon only
Who it suits
PolyMC suits Minecraft players who want separate setups for mods, resource packs, and settings, with support for several mod loaders and pack sources. It is available on Linux, macOS, and Windows, though Intel Mac users need the legacy universal build.
Verdict
PolyMC brings instance organization, mod loader support, and modpack installation together in a free launcher. Check the Java selection requirement and macOS build note before choosing it.
Plans and prices
From PolyMC's own pricing page, checked 11 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| PolyMC | Free | Open source Minecraft launcher · no paid tiers stated |
The facts
Each one read from PolyMC's own pages, with the date it was checked.
What it does
- Built-in modpack catalog
- Yeschecked 22 Sep 2026
- Customization
- The home page says users can customize the instance window and theme.checked 11 Oct 2026
- Diagnostics
- PolyMC provides access to logs and a way to stop Minecraft if it crashes or freezes.checked 11 Oct 2026
- Individual mods
- It can install individual mods from CurseForge and Modrinth, tailored to the selected loader and game version.checked 11 Oct 2026
- Instances
- Each Minecraft instance has its own folder for separate mods, resource packs, settings, and other files.checked 11 Oct 2026
- Java runtime management
- Yeschecked 22 Sep 2026
- Java setup
- PolyMC does not yet automatically select the right Java version for an instance, so users must select it manually.checked 11 Oct 2026
- License
- The launcher code is available under GPL-3 and the logo and related assets use CC BY-SA 4.0.checked 11 Oct 2026
- Mod loaders
- The launcher supports installing Forge, Fabric, LiteLoader, and Quilt.checked 11 Oct 2026
- Mod loader support
- multiplechecked 22 Sep 2026
- Modpack import
- bothchecked 22 Sep 2026
- Modpacks
- PolyMC lists modpack installation from CurseForge, Technic, FTB, FTB Legacy, and Modrinth.checked 11 Oct 2026
- Notable limit
- The current macOS build is Apple Silicon only; the site directs Intel Mac users to the legacy universal build.checked 11 Oct 2026
- Performance
- PolyMC is built with Qt technologies, which its site says keeps the launcher performant and light on system resources.checked 11 Oct 2026
- Product
- PolyMC is an open source Minecraft launcher for managing multiple instances, accounts, and mods.checked 11 Oct 2026
- Separate instances
- Yeschecked 22 Sep 2026
- Support
- The project directs users to create an issue or ask in its Discord server for help.checked 11 Oct 2026
- Worlds and resources
- The launcher can manage worlds, resource packs, and shader packs.checked 11 Oct 2026
Money
- Free plan
- Yeschecked 22 Sep 2026
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