There are 2 repositories under datapack topic.
An open-source Minecraft music maker.
Data Pack Generators and Tools for Minecraft 1.15, 1.16, 1.17, 1.18, 1.19, 1.20
Development tools for vanilla Minecraft: Java Edition data pack developers.
Sandstone | Next Generation Framework for Minecraft
The Minecraft Technology Based Datapack
Remakes of the Mini Games from the Legacy Editions of Minecraft to Java Edition
Gamemode 4 is a collection of modular Minecraft Datapacks that change or expand on the vanilla experience whilst keeping the vanilla feel. Our modules are developed with a focus on usability and efficiency.
Some useful functions for the intrepid datapack developer.
Data+resource pack for viewing inside of shulker boxes in your inventory
A Minecraft datapack maker and editor for 1.15 – 1.20.4 data packs
Data pack that enables the Update 1.21 experimental features, but disables the trial chambers and breeze. Made for Hermitcraft 10!
A Minecraft biome map capable of handling worldgen datapacks.
A new minecraft datapack language.
A popular Minecraft worldgen and adventure datapack for the Nether
Minecraft 配布ワールド 「The Unusual SkyBlock」用データパックリポジトリ
A data pack for Minecraft 1.13, 1.14 and 1.15 (Java) for automatically sorting every item in the game.
The One Vein-Miner-Datapack: Minecraft Java Versions 1.13/1.14/1.15/1.16/1.17
have a bowl mr squidward
A fancy, minecraft-styled icon theme, designed specifically for datapack devs. Available at VS Code marketplace:
Ambient sounds for Minecraft.
Lag-free background computation with subtick timing.