Core Launcher

Lightweight, useful, fabulously customizable launcher for Minecraft.

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Why should I use Core Launcher?

Because,

It is open source.
It is fast.
It is lightweight.
It is modular.
It contains the CurseForge, Modrinth, and the OptiFine APIs. *
It is built with a useful and efficiency-based UI.
It includes the most used modding APIs like Forge and Fabric.
It supports CLI.
It has its own Java Download Manager.
You can download multiple modpacks in one profile.
You can see your worlds (including seeds, game mode, and worlds' spawn point), and resources (mods, resourcepacks, modpacks, and worlds) on one page.
You can easily back up, import, and share your profiles and worlds.
Also, it supports offline and online authentication.

Create a profile, select your loader (wrapper), customize your resources, and play!

How can I use it?

You can find the detailed guide here.

Beta Source

You can find the newest source code on beta branch.