Nelian Launcher

A lightweight, modern Minecraft launcher. Built for simplicity, speed and a better experience.

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Screenshot of the Nelian Launcher main interface
Our Products

Built for Minecraft.

Everything you need. Nothing you don't.

Nelian Launcher

A lightweight and modern Minecraft launcher. Designed to make launching and managing your game simple.

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Nelian Client

A modern Minecraft client focused on performance, customization and a clean user experience.

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Why Nelian

Simple by design.

We believe software should stay out of your way.

Performance First

Lightweight software designed with performance in mind.

Minimal Design

A clean and modern interface without unnecessary complexity.

Customization

Flexible features that let you shape your Minecraft experience.

Capabilities

What you can do.

Everything you need to launch, manage and play.

Vanilla Launching

Launch vanilla Minecraft directly from the launcher.

Modrinth Instances

Keep separate Modrinth instances organized in one place.

Modpack Management

Manage modpacks and download mods from Modrinth inside the launcher.

Nelian Client Launch

Launch Nelian Client straight from the launcher.

Skin Manager

Preview, save and change your skin.

Log Viewer

Inspect launcher and game logs when you need to troubleshoot.

Auto Connect

Automatically connect to a server on launch.

Changelog

What's new.

Release notes for the launcher and the client.

Nelian Launcher

v8.1.2

New Features & Enhancements

  • GPU Acceleration Option: Added a setting for GPU Acceleration, which is enabled by default. When active, interface rendering and graphical processing are offloaded to the graphics card (GPU) instead of the CPU, providing a significantly smoother UI experience while reducing system processor load.
  • Performance Mode Option: Added a dedicated mode designed for low-end hardware. When enabled, it disables the features that drain resources; such as main screen skin rendering, background blur effects, and heavy UI animations to maximize system responsiveness.
  • Custom Wallpaper Support: You can now fully personalize your main launcher screen background with static image formats (PNG, JPEG, WEBP) as well as animated video backgrounds (MP4).
  • Dynamic Color Adaptation: UI elements, accents, and text colors now automatically adjust their color shades to match the dominant colors of your selected background image or video.
  • LanguageManager Optimization: Rewrote and optimized the language management core, improving language switching speed and lowering overall memory consumption.

Bug Fixes

  • Modrinth Category Issue: Resolved an issue where categories in the Modrinth mod loader failed to display or load content properly.
  • Localization Fix: Fixed an issue where specific UI text strings remained stuck in English regardless of the selected language.

Nelian Client

v4.6.1

New Features

  • Re-imagined Cape Physics (Verlet Integration): Cape physics have been completely rebuilt from scratch utilizing an optimized, real Verlet integration physics engine. Capes now respond to movement with natural, smooth, and realistic motion dynamics while delivering significantly better performance and lower CPU utilization.
Readme

Everything, in the open.

What Nelian is, what it does with your data, and how it's licensed.

Why Nelian?

Most big clients come with ads, extra bloat, and features that exist mainly to make money. Nelian is different.

  • Made for players, not for profit. Nelian is not built to earn money.
  • No ads. Never.
  • Every feature has a reason. If it doesn't make Minecraft more fun, more comfortable, or faster, it doesn't belong here.
  • Light and fast. Built with performance in mind from the start.

Your Privacy Comes First

We know a launcher asks for your trust, so here is exactly what happens with your data:

  • Your account data stays on your device. This includes Microsoft accounts, offline accounts, and usernames.
  • Nothing is sent to us. Your account data only goes to Microsoft's and Minecraft's own APIs, like any normal login.
  • One small exception: your UUID is sent to mc-heads.net so your skin's head can be shown in the Account Manager.
  • Only two connections besides that: the launcher contacts the Nelian GitLab repository to check for updates, and mc-heads.net to show your profile.

Source-Available and Transparent

You don't have to just trust us you can read the code and build the launcher yourself. The original source code written for Nelian Launcher is public on GitLab (read-only, for educational purposes). It contains launcher-side features, performance improvements, and the rendering system.

It does not include Minecraft's code, third-party libraries (like CmlLib), or Nelian's security systems.

You are free to compile and use it for yourself. You may also redistribute the software or your modified versions, provided you do so for noncommercial purposes only and in full compliance with the PolyForm Noncommercial License 1.0.0.

Any build you compile or redistribute is used entirely at your own risk. We provide no warranty and accept no liability for any damages or issues arising from self-compiled or third-party distributed builds.

NelianGuard

NelianGuard is Nelian's own integrity protection system, developed by Ywix.

It helps protect Nelian Client and Nelian Launcher from unauthorized memory access, injection attempts, tampering, and other unauthorized changes. It runs locally, does not connect to any network, and includes file checksums internally.

For security reasons, the NelianGuard source code is not included in this repository and is not open source.

License

The original code written for Nelian Client in this repository is licensed under the PolyForm Noncommercial License 1.0.0.

You may use, modify, and distribute it for noncommercial purposes only. Commercial use is not permitted.

Required Notice: Copyright (c) 2026 Nelian / Ywix

No Liability: As far as the law allows, the software comes as is, without any warranty or condition, and the licensor will not be liable to you for any damages arising out of these terms or the use or nature of the software, under any kind of legal claim.

Disclaimer

Minecraft is a trademark of Mojang Studios. Nelian Client is an independent project. It is not affiliated with, endorsed by, or sponsored by Mojang Studios or Microsoft.

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