Open Source JavaScript Minecraft Launchers

OriLauncher is a free and open source custom launcher for the popular game Minecraft designed to streamline the process of launching the game with a modern, user-friendly interface. Built using web and desktop technologies like Svelte, Electron, and Vite, it aims to provide a fast and responsive experience for players across multiple platforms including Windows, macOS, and Linux. The launcher enables users to switch quickly between different Minecraft environments (such as Vanilla, Forge, or Fabric) with just one click, eliminating manual setup steps. It also offers support for managing multiple user accounts, remembering both Microsoft and offline profiles to make logging in simpler and more fluid. Players have control over technical settings like RAM allocation and Java version selection directly within the launcher, allowing them to optimize performance for their system.

GDLauncher is a simple, yet powerful Minecraft custom launcher with a strong focus on the user experience. Our main focus is to provide a powerful launcher but keeping the UI clean and modern. You'll be able to browse and download any mod pack directly from within the launcher! You can play vanilla, forge and fabric directly from the launcher, without needing to download anything else. You can easily download mods and keep them up to date. You don't need to have java installed on your pc. We will automatically download the best java release to ensure complete compatibility. You don't need to have java installed, a suitable version will be downloaded automatically. It's as easy as pie to install the vanilla game, forge, fabric, and all curseforge modpacks. No further action from the user is required.

A customizable Minecraft launcher allows players to manage multiple instances and mod packs.

A minimal Minecraft: Java Edition launcher.

MC-Clients is a next-generation launcher optimization suite built for sandbox gaming, delivering three distinct, performance-tuned environments to match any playstyle — whether you're chasing competitive PvP dominance, maximizing frame rates on modest hardware, or running a modded server with strict anti-cheat requirements. Each launcher comes pre-optimized with custom JVM flags, automatic memory tuning, and seamless texture pack injection, all wrapped in a lightweight package that consumes under 50 MB of RAM. The suite supports offline LAN session spoofing, real-time resource monitoring, and one-click version switching between stable and experimental builds. Distributed through a secure CDN with silent background updates and SHA-256 integrity checks, Minecraft is completely free, collects zero telemetry, and is built for researchers, server admins, and power users who demand reliability without bloat.