Data Packs for Minecraft Java
Browse 165 free data packs for Minecraft Java — popular picks include Basically Recipes, The Complete Advancement Drop Randomizer, Shuffler & Multiplier, Matix3005's size datapack.
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Basically Recipes
Just a datapack that adds recipes for modded profiles
The Complete Advancement Drop Randomizer, Shuffler & Multiplier
Advancement-based multiplier, randomised drops, and automatic reshuffling - the most complete advancement pack in the series.
Matix3005's size datapack
A minecraft datapack that let's you shrink and grow using the /tag command.
Rabbit's Escape
Two craftable teleportation items: White Rabbit's Escape teleports you to spawn, Black Rabbit's Regret teleports you to your last death location.
A Plenty Of Advanced Enchants
This datapack adds new quality of life and combat enchants! It adds 19 new enchants (1 being secret), 1 curse, and modifies 13 vanilla enchants.
OneStackMax
A datapack that makes all items unstackable
You shall be Visible!
Skellies Goto Torches! And you got more fun soul torches that let you move skeletons, too op but eh, for fun (datapack) for feedback goto toomanyskellies@gmail.com

Contrasting Curses: Leveled
Addon enabling levels for a collection of unique curses with interesting tradeoffs encouraging interaction with cursed gear
Special Gem Amulets
Transforms vanilla minerals and bows into powerful custom amulets using modern 1.21.11 data-driven item mechanics.
Above The Leaves: Survival
You can only walk on leaves! Touch the ground and you will die through it.
SHMA server data pack
The data pack's name and design can be changed and adapted to your server.
Damage=Random Effect
Every time you take damage you get a random effect with a duration of 15 seconds to 15 minutes. Inspired by BastiGHG

Whoopie Cushions
Add some whimsy into your world with craftable whoopie cushions and rainbow cushions when renamed.
Actually Scary Creakings
A small little datapack, made to make creakings legitimately a threat to the player.
FriedMentally's Elytra Slowfalling Disabler
Basicly just disables people elytra instead of giving them slow falling.
Custom Hearts
This datapack adds 10 custom hearts with custom abilities and powers!
Snowy's Easy Trolling
This datapack adds three features that makes trolling much easier and funnier.
Shield Nerf
Make shields only protect some of the damage!
Shapeshifter Origin
The shapeshifter can change between four different forms: standard, speed, attack, defense, and three different sizes: small, average, and large, all with unique benefits and drawbacks.
Wall Climber
Allows you to walk on walls using the Gravity API mod.
GoatHornDeath
A simple administrative datapack that allows server owners to place a "curse" on specific players. Once cursed, a player will instantly die whenever they use a goat horn.