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PolyMC

polymc.org

  • Free
  • Windows
  • Linux
Visit polymc.org Prices Alternatives

What it is

PolyMC is a free, open source Minecraft launcher for managing multiple instances, accounts, mods, worlds, resource packs, and shader packs. Each instance uses its own folder, keeping mods, resource packs, settings, and other files separate. The launcher supports Forge, Fabric, LiteLoader, and Quilt, and includes a catalog of modpacks from CurseForge, Technic, FTB, FTB Legacy, and Modrinth. Individual mods can be installed from CurseForge and Modrinth according to the selected loader and game version. PolyMC also provides Java runtime management, logs, and a way to stop Minecraft after crashes or freezes. Users can customize the instance window and theme. It runs on Linux, macOS, and Windows at no charge. The current macOS build supports Apple Silicon; Intel Mac users are directed to a legacy universal build. Java version selection remains manual for each instance.

Good, and not so good

  • Free open source launcher
  • Separate folders for each instance
  • Supports Forge, Fabric, LiteLoader, and Quilt
  • Built-in catalog from several mod sources
  • Manages worlds, resources, and shaders
  • Intel Macs require the legacy universal build
  • Java version selection is manual
  • No free trial is listed

Who it suits

It suits Minecraft players who maintain separate modded setups across Linux, macOS, or Windows. It is also useful for users wanting built-in modpack sources, loader choices, and instance-level file organization.

PolyMC focuses on keeping Minecraft instances and their files separated while offering broad mod-loader and modpack support. Its manual Java selection and macOS architecture limitation are important setup details.

Plans

  • PolyMCOpen source Minecraft launcher · no paid tiers statedFree

As polymc.org lists them, read 11 Oct 2026.