A fast, modern Minecraft launcher with Modrinth integration, multi-loader support, modpack import/export, and a clean interface built for players who mean business.
Desktop Only
This interactive demo is designed for desktop.
Open this page on a PC to try Quasar live.
Features
Quasar is built around simplicity and power - all the tools a serious Minecraft player needs in one place.
Modrinth Integration
Search and install mods, shaders, resource packs, and datapacks directly from Modrinth - results auto-filtered by your instance's game version and loader.
Multi-Loader Instances
Spin up isolated instances on Vanilla, Fabric, Forge, Quilt, or NeoForge - each with its own mods, version, and settings. Playtime tracked per instance.
Content Updates
Quasar checks every mod, shader, and resource pack for updates and lets you apply them individually or all at once per content type - with version badges throughout.
Skin & Cape Editor
Manage a library of skins, preview them on a live 3D model, pick a cape, and apply in one click. Supports both classic and slim model types.
World & Datapack Manager
Browse worlds with seed, spawn, difficulty, game mode, and age stats. Install datapacks from Modrinth or a local zip per world - no file explorer needed.
Java & Memory Control
Auto-detect system Java or download managed Temurin runtimes (8, 17, 21). Set min/max heap per instance with over-allocation warnings and custom JVM flags.
Multi-Account Support
Sign in with Microsoft or play offline. Store and switch between multiple accounts instantly - each with skin preview and real-time session status.
Import & Export
Import Modrinth modpacks (.mrpack) or Quasar instance packs (.qipack) with auto-download of missing files. Export full or lightweight packs to share with others.
Live Game Console
Watch real-time log output with color-coded levels as your game runs. Crash detection surfaces the full crash report automatically - no digging through files.
Download
v0.1.1 · Windows x64 · Free