Utility Mods for Minecraft Java
Browse 462 free Utility mods for Minecraft Java — popular picks include Cupboard, Iceberg [Neo/Forge], ZeroCore 2.
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Cupboard
Cupboard provides code, frameworks, and utilities for minecraft mods
Iceberg [Neo/Forge]
A modding library that contains new events, helpers, and utilities to make modder's lives easier.
ZeroCore 2
Utility mod and multiblock API
FTB Utilities (Forge)
FTB Utilities is a mod by FTB. It aims to provide several useful utilities within the FTB Platform ranging from friends list, server configuration utilities, world borders, guide system and many other features...
Just Enough Items (JEI)
View Items and Recipes
InsaneLib
A set of common classes and utilities used by Insane's mods
Roughly Enough Items Fabric/Forge/NeoForge (REI)
Clean and Customizable. An easy way to browse recipes. Alternative to JEI Just Enough Items.
MysticalLib
Structure spawning utilities, code-based block and item models, and other nice utilities!
Kotlin for Forge
Adds a Kotlin language loader and provides some optional utilities.
EMI
Featureful and accessible modern item and recipe viewer with JEI compatibility
Iceberg [Fabric]
A modding library that contains new events, helpers, and utilities to make modder's lives easier.
Obfuscate
A library that adds in useful events and utilities
JEITweaker
Adds CraftTweaker support to Just Enough Items
NotEnoughItems
Recipe Viewer, Inventory Manager, Item Spawner, Cheats and more
Iceberg
A modding library that contains new events, helpers, and utilities to make modder's lives easier.
LibrarianLib
An extensive collection of tools, utilities, and frameworks.
mutil
Data management, network utilities and hierarchical view rendering for minecraft

EMI
A featureful and accessible item and recipe viewer
Open Parties and Claims
Adds the ability to claim chunks and make player parties, integrates with Xaero's Minimap and World Map
Create: Dragons Plus
Provide convenient features to players and dev utilities for Create addon developers.

GlitchCore
A library mod aimed at abstracting mod loaders and providing various utilities for our mods.
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
Not Enough Items 1.8.+
Recipe Viewer, Inventory Manager, Item Spawner, Cheats and more
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.
Numina
Various utilities
ObsidianUI
SpruceUI unofficial forge port, is a Minecraft mod API which adds some GUI utilities.
UniLib
A common set of Utilities, designed for over 50 versions of Minecraft!
Kube Utils
Adds helper utilities and new features to KubeJS in a clean, concise and consistent API design
FDLib
Collection of utilities for my mods
RLTweaker
Miscellaneous fixes and tweaks for RLCraft
FTB Tweaks
This is a very simple mod that introduces the concept of game modes. For want of a better description this allows you to set up multiple minetweaker profiles and switch between them on the fly (no server restart required) This gives you the ability to...
[Let's Do] API
A Library for Forge and Fabric with utilities such as Render Features, Recipe Books and Wood API

Tweakeroo
Various client-side tweaks, such as hand restock, hotbar swap/cycle, flexible/fast block placement etc.
Framework (Fabric)
A library providing powerful utilities and common code for developers
Formations (Structure Library)
Formations adds utilities for structure datapacks!
Looot
Random item name generators and other loot table utilities