Utility Mods for Minecraft Java
Browse 15,395 free Utility mods for Minecraft Java — popular picks include LibrarianLib, mutil, Angel Ring.
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LibrarianLib
An extensive collection of tools, utilities, and frameworks.
mutil
Data management, network utilities and hierarchical view rendering for minecraft
Angel Ring
This mod adds an angel ring, which allows you to fly like in creative mode for 1.14+. Inspired by Extra Utilities.
Inventory Tweaks - ReFoxed
Inventory Tweaks for NeoForge
Rough Tweaks
Small changes to make the minecraft health system a bit more difficult

EMI
A featureful and accessible item and recipe viewer
Inventory Tweaks Renewed
Inventory sorting, auto-refill, and some more!
Ars Additions
An Ars Nouveau addon focused on immersion and quality of life improvements

Roughly Enough Items (REI)
Clean and Customizable. Alternative to Just Enough Items/JEI.
When Dungeons Arise - Spacing Tweaks
Changes spacing and separation of several WDA structures
Quests Kill Task Tweaks
Improves kill contribution tracking for FTB Quests
Create: Bells & Whistles
Utilities, adornments and decorations for the aesthetically concerned engineer
XaeroPlus
Xaero WorldMap / Minimap Extra Features
Ender Utilities
Miscellaneous utility items and blocks, many are inventory or storage related.
Distraction Free Recipes (EMI / REI / JEI)
Automatically hides the recipe viewer when not searching.
Inventory Sorting
Quick, simple, and lightweight inventory sorting
Create: Dragons Plus
Provide convenient features to players and dev utilities for Create addon developers.

Open Parties and Claims
Adds the ability to claim chunks and make player parties, integrates with Xaero's Minimap and World Map
RandomTweaks
A bunch of miscellaneous, vanilla-compatible tweaks for Minecraft, such as player head drops, sound system reloading and a time of day overlay.

GlitchCore
A library mod aimed at abstracting mod loaders and providing various utilities for our mods.
Things [Fabric]
Trinkets and Utilities to enhance casual play
Better Than Mending
A small quality of life tweak to the Mending enchantment
When Dungeons Arise - Loot Tweaks
A bunch of loot-changing datapacks to better fit certain modpacks

Translations for Sodium
Unofficial translations for the Sodium Minecraft mod
YUNG's Menu Tweaks (Forge/NeoForge)
A small, lightweight mod that makes browsing menus a lot easier

Motschen's Better Leaves
Improves the appearance of leaves with high mod compatibility and performance!
Not Enough Items 1.8.+
Recipe Viewer, Inventory Manager, Item Spawner, Cheats and more
Elysium API
Elysium is a library mod with various utilities, built-in features and new data driven systems for both Mod-Developers and Modpack-Creators to utilize
Despawn Tweaks
Optimization mod that fixes cases where mobs will be prevented from despawning.
BetterEnd Crashed Ships Tweaks
Adds loot to BE's crashed ship chests
Data Anchor
Simple library mod with helpful data attaching and networking utilities including attaching data to entities, chunks, players, and worlds with low boilerplate code. Its own system built from the ground up for multiloader support.

Chat Reporting Helper
An educational tool that explains chat reporting in a simple and neutral way.
VoxelMap
Minimap and Worldmap. Have an overview of your surroundings, or view the entire world. Create waypoints.
Numina
Various utilities
Xaero's Minimap & World Map - Waystones Compatibility [Forge & NeoForge]
Creates a Waypoint in Xaero's Minimap & World Map when activate a Waystone

Low On Fire
Low fire on your screen! Vanilla Friendly