Library List

This is a rather incomplete list of Minecraft related libraries finished or currently in development.

Name	Description	Author(s)	Language	License	Last Version Supported
nbt	Lightweight, intuitive NBT library for the JVM.	iBuyMountainDew	Java	MIT	All
go-mc	Go library of network protocol, NBT, Yggdrasil, mca file and RCON and so on.	Tnze	Go	MIT	1.17-All
mcproto-rs	Rust library that implements the Minecraft protocol (serialize/deserialize) and defines abstractions/macros to implement any prior or future version of the protocol.	Joey (Twister915)	Rust	APACHE 2.0	1.15.2
CraftLib	Kotlin library that aims to wrap the entire Minecraft codebase. Currently supports protocol, chat and NBT. Will support the Mojang REST API, bot creation, launching, RCON and regions.	Zerite	Kotlin	LGPL	1.7.x, 1.8.x
GemBlocks	C# library that easily saves/loads/generates worlds. Currently only has flatgrass. More to come. Based on MorbZ's J2Blocks (translated from java to C#).	apotter96	C#	MIT	All
CmlLib.Core	.NET Minecraft Launcher Library. Installing and Launching all version including forge, Yggdrasil Authentication, with crossplatform	AlphaBs	C#	MIT	All
CraftProtocol	Open source partial implementation of Minecraft network protocol and NBT in Python 2.7.	Toranktto	Python	MIT	1.8.x, 1.10.x, 1.12.2
go-yggdrasil	Allows usage of Mojang's Yggdrasil authentication system in Go	JoshuaDoes	Go	MIT	n/a
McProtocol	Packets, NBT, Login, Proxy	hansihe	Elixir	MIT	1.9.2
yggdrasil-py	Open-source Python 3.6+ wrapper for the Mojang Yggdrasil authentication service.	Sam Carson (samcarsonx)	Python	MIT	n/a
MojangSharp	.NET wrapper for Mojang API	Enzo Innocenzi (Hawezo)	C#	Apache License v2	All
Craft.Net	.NET Minecraft client, server, and data manipulation library	Drew DeVault (SirCmpwn)	C#	MIT	1.7.5
fastmc	Python packet parser/writer & utility library	Florian Wesch (dividuum)	Python	MIT	1.7/1.8
node-minecraft-protocol	npm install minecraft-protocol	PrismarineJS	node.js	BSD	1.7-1.16
minecraft-server-util	A Node.js library for Minecraft servers that can retrieve status, perform queries, and RCON into servers.	PassTheMayo	Node.js	MIT	All
mclib	C++ library for creating clients	plushmonkey	C++	MIT	1.10-1.12.1
Phpcraft	A PHP library for all things Minecraft: Java Edition.	timmyRS	PHP	MIT	1.8-1.15.2
pyCraft	Python minecraft client library	Ammar Askar (ammaraskar), Jeppe Klitgaard (Dkkline)	Python	Apache License v2	1.15.1
MCProtocolLib	Java implementation of the Minecraft protocol.	Steveice10	Java	MIT	1.14.3
Ozelot	Rust implementation of MCMODERN networking	C4K3	Rust	Public domain	1.13.2
SharpMinecraftLibrary		ags131, electronicboy	C#	Unknown	1.6.2 (Partial)
Pdelvos Protocol Implementation	.NET client/server protocol library with support for several versions.	pdelvo	C#	MIT	1.5.2
Minecraft PHP Client 2	PHP client and protocol library. With events, actions and API	shoghicp	PHP	WTFPL	1.5.1
libmcnet	Event based, zero-copy, portable Minecraft network protocol parser	deoxxa	C	BSD	1.4
node-mcnet	Node.JS bindings to libmcnet	deoxxa	JavaScript, node.js	BSD	1.3.2
MCPackets	Java Minecraft protocol library	main()	Java	Unknown	1.2.5
libmc--c	World representation data structures and OpenGL drawing functions.	axus	C++, OpenGL	GPLv3	1.1
mcproxy	Minecraft Proxy (and bot) framework in C++	mave	C++	GPLv3	1.1
fNbt	Reading, writing, and manipulating NBT files and streams, for .NET	Matvei Stefarov (fragmer)	C#	BSD	n/a
Yggdrasil.php	Interfacing with Mojang's Yggdrasil authentication system.	Jim C K Flaten (Jckf)	PHP	Unknown	n/a
libMC.Net	.NET Minecraft interaction library	umby24	C#	MIT	1.7.4
MineLib.Network	.NET Minecraft network client interaction library.	Aragas (Aragasas)	C#	MIT	1.8
NBT-Lib	Allows reading, writing and modification of NBT files and streams.	Evil-Co	Java	Apache License v2	n/a
DarkBot	Minecraft client, automation (AI) platform, and modular protocol library	DarkStorm	Java	BSD	1.5.2-1.7.9
NBTField	Another NBT library in C++	Socolin	C++	MIT	n/a
mclaunch-util-lib	Yggdrasil library in Java, has handy features for launchers.	Kronos	Java	MIT	n/a
OpenLauncherLib	Minecraft launching library written from scratch	Adrien "Litarvan" Navratil	Java	LGPL	1.0.0-1.9.2
S-Update	Powerful and simple Java update system, with Minecraft support. Works with a PHP Server	Adrien "Litarvan" Navratil	Java	LGPL	1.0.0-1.9.2
OpenAuth	Yggdrasil library, with possibility to give an other authentication server, it also has its own auth server.	Adrien "Litarvan" Navratil, Valentin "Vavaballz"	Java	LGPL	1.0.0-1.9.2
text	An open-source MIT-licensed library for working with text from Minecraft.	Jamie Mansfield	Java	MIT	1.11.2
JMCCC	A powerful open-source library for launching and downloading Minecraft.	to2mbn	Java	MIT	All
minecraft-launcher-lib	A library for installing and lauching Minecraft. It also have functions for Yggdrasil.	JakobDev	Python	BSD	All
Adventure	A serverside user interface library for Minecraft: Java Edition	Kyori	Java	MIT	All
Komponent	An easy to use, fast and lightweight Minecraft chat component library, written in Kotlin	Callum Seabrook	Kotlin	MIT	All (Tested on 1.16.5)
SchematicJS	A JavaScript/TypeScript library for loading schematic files	EngineHub	JavaScript	GPL	n/a
SchematicWebViewer	A JavaScript/TypeScript library for rendering schematic files in a web canvas	EngineHub	JavaScript	GPL	n/a