UltraLib

UltraLib

Non-intrusive java code library

by
15.8K Downloads
fabriclibrarymanagementutility
Rent Server with this Mod

About this Mod

This is my penultimate library mod, meant for easing data-driven development and feature registration. It is non-intrusive (meaning no-mixins and such for broad compatibilty) and is purely a collection of helpful Java classes.

Currently includes:

  • OptionalObject: A way for parsing optional data from JSON
  • LatchedKeyBinding: Keybindings that only run once per click
  • SortedList: Sorting a list by weight
  • UltraConfig: Extremely light-weight config
  • SimpleDataLoader, RunnableDataLoader, DetachedRunableDataLoader: Different methods of loading json data
  • Creator: A Function with registry that allows for turning one object into another by a specified id. Mainly used for data-driven features.
  • Lists: Repackaging of the Apache Commons class because its not included on the client by default

UltraDRY!

  • UltraLib now offers some utilities to help keep things DRY.
  • Opt-in by adding this to your client init: UltraLib.registerPackage(this.getClass(), MOD_ID);
  • Now you can grab multiple things with ease!:
    • Mod-specific identifiers with UltraLib.id(String id);
    • Mod translations with UltraLib.getText(String title, String... paths);
    • You can even get your logger wtih UltraLib.log();!
    • More examples here

Available Versions

UltraLib 1.0.7+1.20.1release
MC 1.20.1fabric
November 22, 2025
UltraLib 1.0.5+1.21.9release
MC 1.21.9, 1.21.10fabric
October 1, 2025
UltraLib 1.0.4.3release
MC 1.20, 1.20.1, 1.20.2, 1.20.3, 1.20.4, 1.20.5, 1.20.6fabric
September 30, 2025
UltraLib 1.0.4.2release
MC 1.20, 1.20.1, 1.20.2, 1.20.3, 1.20.4, 1.20.5, 1.20.6fabric
September 26, 2025
UltraLib 1.0.3release
MC 1.20, 1.20.1, 1.20.2, 1.20.3, 1.20.4, 1.20.5, 1.20.6fabric
September 13, 2025

How to Install UltraLib on Your Server

1

Order Server

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

2

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.10).

3

Install Mod

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

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.10, 1.21.9, 1.20.6 (+6 more)

Server-side

Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

UltraLib 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 (1.21.10). You can switch loaders with one click in the panel.

Is UltraLib compatible with fabric?

UltraLib officially supports fabric for Minecraft 1.21.10, 1.21.9, 1.20.6. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with UltraLib – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if UltraLib 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.

Rent Modded Server

Install UltraLib with just one click on your server.

Recommended RAM
4 GBab €8/mo
Min. 3 GB | +1 GB pro 8 Spieler
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
LicenseRef-All-Rights-Reserved
Server-side
Required

Supported Versions

1.21.101.21.91.20.61.20.51.20.41.20.31.20.21.20.11.20