Data Packs for Minecraft Java
Browse 16,086 free data packs for Minecraft Java — popular picks include OreoClient, No iron gear, Diorite's Better Guardians.
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OreoClient
a 'client' for minecraft. Not much. Its what you would expect from a hacked client, but on a datapack so you cant abuse anything on it. server side only.
No iron gear
Ever wanted to block the crafting of iron armor and tools?This datapack is for you!
Diorite's Better Guardians
Makes Elder Guardians an actual boss fight

ThreadLogic
Use any combination of colored wool to craft a bed matching the color of the center piece of wool used in the recipe.
Invisible Item Frames With Interaction Range Increase
No crafting required. This will give players invisible and visible item frames. Frames have enchanted effect, and provide buffs including increased block+entity interaction range in main-hand, and run speed in off-hand.
Way(More)Points
Tired of lodestone compasses taking up inventory space? Repurpose them as lodestone waypoints and see important locations on your HUD! Customize each waypoint with over 50 million combinations.
Origins: Cannoneer
Shatter bones from afar and cruise through foes.
TaggableItems
A minecraft datapack to tag and track items (useful for economy)
Damage Indicators
Simple Damage Indicators to see how much damage you deal.
Disable PocketGPS Curios / Trinkets / Accessories Slot
Disables Curios/Trinkets/Accessories support for PocketGPS
Smart Ore Generation
A Minecraft data pack library for handling custom ore generation by using a smart system for ore location.
keepInventoryWithoutXP
Lets you keep your inventory on death while still losing all experience points and levels
Easy Bundle
Simple datapack to create a bundle.
Origins: Pandora's Actor
An Origin capable of shapeshifting into any other origin on your Singleplayer World / Server, and use their powers as your own. (For Fabric)
Bell Recipe
Adds a crafting recipe for Bells.
Gem Upgrades
Adds 6 Geode structures each one with a gem type you can upgrade tools/equipment (and rings!) with, lets you mix between Overworld Gems and Nether Gems so each item can have max 2 gems.
More Recipes: Additional Dispenser Crafting
Craft Dispensers from Dropper & Bow/Bow Recipe.
Cloroxwipes110's Crafting Tweaks
Much needed changes to the rudimentary Minecraft crafting system
Rein's Matcha Heart Containers Fix
Fixes a regression on Matcha Flavoured 1.10+ that makes lowering heart count to below 10 possible, making crystal hearts seem like they don't work.
More Recipes: Stonecutting Mini-Collection
A mini-collection of recipes that add ways to craft various items in the stonecutter.
Rainzy's Utilities
Various Utilities that are still 'Vanilla' and very handy for multiplayer servers!
Logical Leaf Litter
No more smelting leaves, but smoking them dry instead!
Crafter God DP
Craft almost 50 uncraftable items while being balanced!
IncreaseSlimeRates
Makes slimes spawn 2.5x more often in swamps and mangrove swamps.
Vertical Rails! (LadderCart)
Lets Minecarts climb Ladders, since 1.17! All in-game Minecart types are supported.
Soul Sand To Tinted Glass
Smelt soul sand into tinted glass!
Better Nether Fortress Loot
Improves the loot found in Nether Fortress chests.
More Recipes: Craft Spore Blossom
Craft Spore Blossom from Big Dripleaf & Allium.
More Recipes: Color Carpet & Wool
Dye Carpet & Wool any color from any color, 8 to 8. Preserves Vanilla 1 to 1 recipes as they are still useful.
DJ's Summer Pack
DataPack that brings new Summer Themed additions to Minecraft such as beautiful butterflies!
Copper First!
Prevents stone tools from mining iron. Useful for modpacks that want to force copper into the progression.
Focal's UHC Datapack
A 1.21 UHC PVP Datapack based on UHC BLOX. UHC BLOX by gerrybrano.
/trigger ChangeOrigin
Adds a command for players to change their origin, with a limit of 3. Features a 3 hour trial where changes are infinite when someone first joins.
Technical Electrical Tweaks
A datapack containing tweaks and customisations for the Technical Electrical Modpack.
Cobblemon Brush Fix
A simple datapack to temporarily fix the brush interactions for neoforge cobblemon 1.7.3
Nether Expanse Incendium
This datapack removes the Nether roof and adds End City-style exploration into the Nether sky. Designed for Incendium compatibility.