1.21 Creation Utilities

Lightweight and modular API providing common hooks and intercompatibility measures utilized by mods using the Fabric toolchain.

Emissive, Random & Custom texture support for entities in resourcepacks just like Optifine but for Fabric

EMF is an, OptiFine format, Custom Entity Model replacement mod available for Fabric and Forge.

Adds resourcepack features and a GUI to configure OptiFine alternatives more conveniently.

Customize Map Color, Block Colors, Colormaps and Block Sounds, Biome Colors, Dye Colors. Supports Optifine format. For Resource Packs

Take full control over your vanilla game

Formations adds utilities for structure datapacks!

Extra Features for Carpet Mod

Allows for entity sound variation using OptiFine format property rules

Tools to aid in datapack creation

Pose and modify your armor stand with ease!

Create custom portals using CustomPortalApi with datapacks

Allows data/resource packs and mods to modify parts of json files instead of completely replacing them.

Advanced Villager configuration with data driven trades

Data driven entity model library

Data driven Blocks, Items and Decorations for Fabric based servers. No client mods required!

Adds copy button for the "/data get" command output

This mod allows Minecraft's data commands (/data, /execute store, etc.) to modify player data

Define what happens when an anvil lands on blocks or entities. Data driven.

This mod adds a simple /uuid command that shows the UUID of any entity currently loaded, and allows you to copy the UUID string or the NBT data representation of the UUID.

Library mod providing data driven in-world crafting with support for data generation.

Fabric mod that allows resource pack creators to overwrite the models for held items just like the spyglass and trident

Client-Side mod allowing you to adjust arm positions in item JSON models. Ported to 1.21