Plugin for IntelliJ IDEA that gives special support for Minecraft mods
Experience first class support for all of the major JavaMinecraft development platforms, including Bukkit and derivatives such as Spigot and Paper, Sponge, Forge, Fabric, MCP, Mixins, LiteLoader, BungeeCord, and Waterfall. It also provides in-depth support for Access Transformer and NBT files, and more. Because of this, you can install the plugin through IntelliJ's internal plugin browser.
An open source Minecraft reimplementation written from scratch
Minosoft is an open-source reimplementation of the Minecraft client written primarily in Kotlin and Java. Rather than modifying the official client, the project attempts to recreate the functionality of the game from scratch while maintaining compatibility with Minecraft servers. The goal of Minosoft is to provide a more flexible and stable architecture that developers can experiment with while exploring alternative implementations of the Minecraft client. ...