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Poly+ (PolyPlus)

The best world hosting and friends mod. By Polyfrost, best with OneClient.

FabricOrnithe
Loaders
FabricOrnithe
Downloads on Modrinth
678K
Followers on Modrinth
26
versions
1,005
Updated
November 6, 2026Nov 6
Published
in 2022

At a glance

Runs on Fabric and Ornithe
For Minecraft 1.21.8, 1.21.10–26.3 …
Client only — no need to install it on the server
Latest version — v1.4.5 from November 6, 2026
Requires Fabric Language Kotlin
License GPL-3.0-only — free
Where it's needed
In gamerequiredOn servernot needed

Install in the game only; not needed on the server

Game versions1.21.4–1.21.5, 1.21.8, 1.21.10–26.3 …

PolyPlus

Modrinth downloads CurseForge downloads

PolyPlus is the companion mod for OneClient. It adds OneClient's online features to the game.

Host a world

Pick a world from the main menu, or use the button that replaces "Open to LAN", and your friends can join without any port forwarding (they need PolyPlus too).

  • Choose the game mode and whether cheats are allowed
  • Invite single friends or a whole group
  • Share your resource pack with everyone who joins using /polyplus sharepack
  • Works with Simple Voice Chat
  • Regular LAN hosting is still there

Friends and chat

Open the Social menu with Shift+P.

  • Add friends by username
  • Direct messages and group chats
  • Block players
  • See your world invites and rejoin worlds you were invited to

Cosmetics

Capes, wings, hats, glasses, gloves, boots, auras, back and shoulder items, plus pets on modern versions and emotes from an emote wheel.

  • Browse what you own and what the store has from the Cosmetics screen
  • Choose whose cosmetics you see for each type: everyone, friends only, just yourself or nobody
  • A badge on nametags and in the tab list shows who else uses PolyPlus

Chat emoji

Type a shortcode like :sob: and it turns into an emoji. You get suggestions while you type, and there's a picker next to the chat box.

Main menu

A new title screen with Quickplay for your last servers, a 3D preview of your player, an account switcher and featured servers. Every part can be hidden, or you can switch back to the vanilla menu entirely.

Extras

  • A first launch setup screen for toggle sprint, motion blur, GUI scale and other OneClient mods
  • A warning when your memory allocation is hurting performance
  • A Windows sensitivity converter in the controls screen (1.8.9)
  • Polydium, our performance mod, is included

Terms of Service

The online features need you to accept the Polyfrost Terms of Service and Privacy Policy. If you decline, hosting, friends, chat and cosmetics stay off. You can change your answer under Privacy in the PolyPlus settings.

Compatibility

PolyPlus doesn't work together with Auto Reauth or with wWaypoints older than 0.8.0.

Supported versions

  • Minecraft 1.8.9 on Ornithe.
  • Minecraft 1.21.1-26.3 on Fabric.

PolyPlus needs OneConfig, the Compose Multiplatform mod and Fabric Language Kotlin. The Fabric builds also need Fabric API.

Support

FAQ

How to install Poly+ (PolyPlus)?

Install Fabric for your Minecraft version, download Poly+ (PolyPlus) for the same version and loader, put the file into the mods folder and launch the game with the loader profile.

Which Minecraft versions does Poly+ (PolyPlus) support?

Poly+ (PolyPlus) has builds for Minecraft 1.21.1, 1.21.4–1.21.5, 1.21.8, 1.21.10–26.3 ….

Is Poly+ (PolyPlus) needed on the server?

Client only — no need to install it on the server

License and source
GNU General Public License v3.0 onlyfree to use and share; changes to the mod itself must be published under the same license
Original — Modrinth↗Files unchanged, verified with SHA-512Is this your mod? For rights holders

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