# MultiMC/Launcher

A custom launcher for Minecraft that allows you to easily manage multiple installations of Minecraft at once

Repository: https://github.com/MultiMC/Launcher
Canonical: https://ross.abutalabs.com/products/launcher
Homepage: https://multimc.org/
Language: C++
License: NOASSERTION
License Family: other
Topics: multimc, c-plus-plus, minecraft, launcher
Last push: 2026-07-28T22:08:09+00:00

## Health v2 (maintenance only)
Score: 65/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 94, release rhythm 8, longevity 100
- inputs: {"age_days": 4742, "days_push": 36, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 4666, forks 1027 (observed 2026-08-28T04:08:56.529098+00:00)

## What it is
MultiMC is a custom desktop launcher for Minecraft that manages multiple isolated game instances, each with its own mods, resource packs, saves, and settings. It supports mod loaders like Forge, Fabric, Quilt and LiteLoader, and can import modpacks from platforms such as Modrinth, CurseForge, Technic and ATLauncher.

## Use cases
- manage multiple isolated minecraft installations
- install forge or fabric mod loaders easily
- import modpacks from curseforge or modrinth
- keep separate mods and saves per instance
- fine-tune java settings per minecraft instance
- diagnose crashes with detailed game logs

## When to choose
- you play several modded or vanilla Minecraft setups side by side
- you want lightweight, predictable instance management with per-instance overrides
- you need to import or share modpacks across platforms

## When to avoid
- you want a one-click official launcher experience
- you plan to build and distribute your own branded builds without handling Microsoft Azure app registration and branding requirements
- you need a launcher with heavy feature churn or flashy extras

## Facets
- artifact type: application
- maturity: active
- function: gui, developer-tools
- domain: gaming-tools, cross-platform
- platform: windows, cross-platform
- tags: minecraft-launcher, instance-management, modpacks, mod-loaders, java, macos, linux

## Member repositories
- MultiMC/Launcher (main) score 65

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:56.529098+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:19:24.936524+00:00, confidence not recorded.
  - readme: https://github.com/MultiMC/Launcher (fetched 2026-08-28T04:08:56.529098+00:00, sha 3db70c60bd79)
  - homepage: https://multimc.org/ (fetched 2026-08-29T09:03:44.098682+00:00, sha 58c6c82265ee)
- Data as of 2026-08-30T08:39:29.467469+00:00.