Multi-instance · Fast & efficient · Open modpack format

Every mod. Every instance.
One launcher.

PyroClient downloads your mods, keeps every instance isolated, and lets you build and share modpacks — without touching a config file.

Windows · macOS · Linux — built on Kotlin & JavaFX
Why PyroClient

Built for people who run more than one setup

Whether you're testing a build, joining three different servers, or maintaining packs for a community — PyroClient keeps everything separate and in sync.

Unlimited instances

Each instance keeps its own mods, Minecraft version, mod loader, and save files. Switch between them in one click — nothing overlaps.

One-click mod loading

Pick the mods you want and PyroClient resolves dependencies, load order, and versions automatically. No manual jar-juggling.

Modpack builder

Assemble a modpack without launching the game. Export it as a single file and hand it to your server, your team, or your community.

Sign in with Microsoft

Log in with your Minecraft account the same way the official launcher does. PyroClient never stores your password.

Inside the launcher

A clean home for every setup

Instances, mods, and accounts — all in one window, all kept apart.

Instances
Mods
Modpack Builder
Account
Settings
Survival — Vanilla+
1.21.1 · Fabric · 14 mods
Ready
Tech Pack Test
1.20.1 · Forge · 62 mods
Updating…
Server: Hollowpine
1.21.1 · Quilt · 38 mods
Ready
+ New instance
Start from a modpack or scratch
Create

Build modpacks without the client

The modpack builder runs standalone. Pick mods, set versions, lock in configs, and export — your team or server admin can import it straight into their own instance.

  • Works without launching Minecraft
  • Locks mod versions and configs together
  • Exports to a single shareable file
  • Imports straight into any instance
{
  "name": "Hollowpine Survival",
  "minecraft": "1.21.1",
  "loader": "fabric",
  "mods": [
    "sodium@0.5.8",
    "lithium@0.12.1",
    "iris@1.6.4"
  ],
  "export": "hollowpine.pyropack"
}

Get PyroClient

The download server is being finished up — sign up to know the moment it's ready.

Windows Soon
macOS Soon
Linux Soon