Kore: Kotlin framework
Kore is a NeoForge library that gives Kotlin mod developers a set of helpers for registration, event handling, data generation and serialization.
What it does
Kore is a modding framework for writing Minecraft content in Kotlin. It shortens the work of registering blocks, items and entities, so developers write less boilerplate. Its event subscription system lets code subscribe to game events from any file, and data generation runs alongside the registers with minimal setup. Automatic codec and serialization generation covers the data classes a mod needs to store and sync.
The framework bundles auxiliary utilities, abstractions and functions for common modification tasks. It depends on Kotlin for Forge, which must be installed next to it. Kore is open source under the GNU Lesser General Public License v3.0 only, and it is built for NeoForge with files for 1.21.10. The source code, issue tracker and wiki are all publicly linked.
Key features
Compact registration
Blocks, items and entities are registered through a shorter process that removes repeated setup code.
Event subscription
Game events can be subscribed to from any location in a mod without a separate registration step.
Data generation with registers
Data generation is wired to the registers with minimal setup, reducing the manual work of writing data files.
Automatic codecs
Codecs and ValueIOSerializables are generated automatically for the data a mod defines.
Kotlin helpers
A set of helper functions makes common modding tasks read more naturally in Kotlin.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Use cases
Who it’s for: Kore suits mod developers who write NeoForge content in Kotlin and want shared utilities instead of their own helper code. Players who only install finished mods do not need it unless a mod they use requires it.
How it compares
NoxaFrame is a client-side only library for Fabric and NeoForge, with files for 1.20.1 – 1.21.1, and is open source under the Mozilla Public License 2.0. Kore runs on NeoForge alone and is open source under the GNU Lesser General Public License v3.0 only, with files for 1.21.10. FancyModLib is a NeoForge library for 1.21.11 under All rights reserved, and it is not open source, so it cannot be inspected or changed the way Kore can.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Kore: Kotlin framework | NeoForge | 1.21.10 | Not published | 2026-07-17 |
| NoxaFrame | Fabric and NeoForge | 1.20.1 – 1.21.1 | Client-side only | 2026-04-20 |
| FancyModLib | NeoForge | 1.21.11 | Client and server | 2026-03-11 |
Questions
Does Kore need Kotlin for Forge?
Which loader does Kore support?
Is Kore's source code available?
In the catalog
Kore: Kotlin framework is one of 3,514 Library mods on ModsFinder, and one of 1,449 Library mods for NeoForge. 15,569 mods support Minecraft 1.21.10.
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What the author says
Kore is a comprehensive Minecraft modding framework designed to optimize and simplify the development of new content for the game. It provides a set of auxiliary utilities, abstractions, and functions to simplify common modification tasks, allowing developers to focus on the effective creation of their mod.
Official listing
- Modrinth page
- modrinth.com/mod/kore
- Owner
- AugustoMegener
- Published
- 2026-07-16
- Updated on Modrinth
- 2026-07-17
- Facts verified
- 2026-10-15