Demo Client

This is a pvp utility mode that works similarly to Feather client it is very lightweight and will provide the best performance possible.

233 Downloads

fabricutility

Rent Server with this Mod

Screenshots

About this Mod

Demo Client — Beta
Demo Client is a free, lightweight Minecraft client mod built on Fabric for version 1.21.1. Packed with HUD modules, a sleek Click GUI, fully draggable HUD elements, and a range of visual and utility features — all designed to enhance your gameplay experience.
⚠️ This is a beta release. Expect bugs, missing features, and frequent updates as we continue to improve. Your feedback helps shape the future of Demo Client!
Features:

FPS, Ping, Coordinates, Speed, Clock, CPS, Keystrokes, Armor, Potion Status
Fullbright, Hitboxes, Reach Display, Nametag
AutoSprint, FreeLook
Fully draggable HUD editor (Right Alt)
Click GUI (Right Shift)
Config saving between sessions

Requirements:

Minecraft 1.21.1
Fabric Loader
Fabric API

Available Versions

Demo Client 1.0.0beta

MC 1.21.1fabric

March 7, 2026

How to Install Demo Client on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.1).

Install Mod

Open the mod browser in the dashboard and search for "Demo Client". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.1

Server-side

✗ Unsupported

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Demo Client server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.1). You can switch loaders with one click in the panel.

Is Demo Client compatible with fabric?

Demo Client officially supports fabric for Minecraft 1.21.1. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Demo Client – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Demo Client consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.