KLP Launcher
A launcher for Minecraft: Java Edition

Getting into a game, down to a single click

KLP Launcher manages your instances, mods, worlds and servers. When the game crashes, the built-in AI assistant Xiaopa finds the cause and tells you how to fix it.

Download for Windows Download for macOS Linux · Coming soon Android · Coming soon

Other systems: WindowsmacOSLinux (coming soon)Android (coming soon)

Free · No ads · Microsoft account sign-in
Public beta · Windows 10 / 11 · macOS 12 and later (Apple Silicon)

KLP Launcher home screen on Windows: continue playing, recent worlds and news
Xiaopa, the AI assistantBeta

Game crashed?
Ask Xiaopa

Xiaopa lives inside the launcher and can read your instances, mods and logs directly. It works out the cause and suggests a fix, and before it changes any file it shows you a confirmation card and waits.

Xiaopa's diagnosis after reading the Vastsea crash report: the direct cause, the order of fixes and the report's limits
Confirmation card: disable NyaSamaCompletePack.jar in the Vastsea instance, reversible at any time

It can also

Check for mod updatesLists which mods have a newer version
Find and install modsSearches Modrinth and asks before installing
Disable modsThe file is renamed, not deleted, so it can come back
Suggest launch settingsBased on this computer's hardware
Look things upReference sites, video sites and the web
Ask when unsureOffers a few options and lets you choose

Xiaopa is currently in beta.

Features

The pages you'll open every day

Real screenshots from the launcher (Chinese interface shown)
Instances

Every version folder is an instance

Nothing to import: the versions already in your game folder show up in the list. Turn mods on and off one by one, and disabled files stay where they are.

Loader and game version
Detected
Disabled mods
Kept
Mods with updates
Flagged
An instance's mod list: every mod has a switch and updates are flagged in green
Downloads

Install a mod, get its dependencies too

Search Modrinth and CurseForge together, filtered by game version and loader. Pick the instance before installing, and any missing dependencies come along.

The download page: mods filtered by 1.21.1 and Fabric
Install dialog: installing to Fabric-v2, with the missing Balm dependency added automatically
Tasks

Downloads queue up, and you can stop them

Every download and install shows up on the Tasks page, where you can pause or cancel it. The download source is picked for your region.

Multiplayer

One invite code, the same world

Create a room with Terracotta and send the invite code to your friends. Players in the room connect to each other directly.

The Tasks page: two installs running, four finished
The multiplayer page: Terracotta is ready to create or join a room

A home screen with just one button

Turn on simple mode and the home screen keeps only the current instance and the Play button, with a background pattern you can change.
Light and dark themes can follow your system.

Standard home screen: continue playing, recent worlds and news
StandardContinue playing, recent worlds and news
Simple mode: only the current instance and the Play button
Simple modeJust the current instance and Play
PUBLIC BETA · WINDOWS 10 / 11 · MACOS 12 AND LATER

Get KLP Launcher

FreeNo adsMicrosoft account sign-inUpdates itself

KLP Launcher icon
WindowsWindows 10 / 11 · 64-bit
  • Installer.exe · 8.4 MB
  • Portable.exe · 28.8 MB
Download for Windows
macOSmacOS 12 and later · Apple Silicon
  • Installer.dmg · 10.5 MB
  • Portable.tar.gz · 10.0 MB
Download for macOS

Current version 1.1.0-beta.1, released 25 October 2026. The launcher updates itself and tells you when a new version is out.

No Linux or Android build yet. Coming soon.