Mods for Minecraft Java
Browse 7,702 free mods for Minecraft Java — popular picks include NextLib, SMP Atlas, SMail.
Step by step: How to install Minecraft Java mods & modpacks
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NextLib
Build Minecraft Plugins The Easy Way
SMP Atlas
Adds a fully server-side Map Atlas item for combining lots of vanilla Maps
SMail
Turn any barrel into a real, in-world mailbox with its own address. Send packages to anyone on the server, manage visitor access, and let mail arrive with sound and particles.
Nether Furnace
This mod adds a nether-furnace that is fueled only by a bucket of lava and runs for a very long time (2 hours, 46 minutes and 40 seconds). The mod is still raw, but it is constantly evolving!
Compressed Blocks+
Compressed Blocks+ adds compact versions of common blocks like Cobblestone, Dirt, and Sand, for easier storage and building.
TickWatch
The project is a Minecraft server monitoring plugin called TickWatch that integrates with Discord webhooks to provide real-time performance reports, including TPS, memory, and CPU usage, along with configurable warning thresholds.
Chest Preview Icons
A preview in front of chests to help identify their contents at a glance.
Basic Screenshot Fix
Your screenshots are now in "{user}/Pictures" with JPG format.
MPostbox
A fully configurable mail system that allows players to send items and messages to other players — even while they are offline.
EcoBack
Vault Economy Backup Plugin for Minecraft Servers
AtlasPin
AtlasPin is a modern, intuitive plugin for managing coordinates on a Minecraft server. It allows players and administrators to create, manage, and share pins using beautiful graphical interface templates and high performance.
Clean The Inventory
Quickly clean your inventory by deleting selected items. Keeps your inventory organized and clutter-free.
Gavel
GUI punishment overlay for LiteBans with automatic escalation based on a player's offense history.
Unistats
UniStats is a Paper/Purpur plugin for persistent player and team statistics with SQLite storage, BetterTeams integration, PlaceholderAPI support, leaderboards, GUI menus, and a read-only REST API.
Root Companion
Root Companion is a Minecraft Forge 1.20.1 mod that turns Root, Aywen's mascot, into a useful and interactive companion for the player.
DupeDuck
DupeDucks is a Minecraft plugin for server version 1.21.11 that lets players duplicate items in their main hand using /dupe <1-10>.
FREE | HypixelStorage | Custom ec, backpack
Hypixel styled storage system.

Links' Additions
This adds a bunch of random stuff I just wanted to code :P Now going public
Evulite
New Technological Material named Evulite.
AstraItemStats
AstraItemStats adds simple, dynamic stat trackers to items with real-time updates and easy extensibility.
MetamorfikBackpack/Mochila [DISCONTINUED]
Plugin Backpack/Mochila
Wireless Hopper
A Paper Plugin that adds Wireless Hoppers to your server. Replace your old long and laggy hopper chains with a single Wireless Hopper.
Chest Collect v1
This is a chest collection plugin without the need for signs!

LootInj
Simple data-driven loot table modification library
Trash + voidstone
3 objects (2 trashs and 1 voidstone)
Quick Stack Charm
Right-click any container (chest, barrel, shulker box, hopper, dropper, etc.) while holding the charm and items from your inventory that match types already in that container get pushed in automatically.
AuraLobby
A modern and modular lobby framework built for Paper servers.
LowdFX
LowdFX extends your Minecraft server with an extremely comprehensive range of features that excites both administrators and players. The plugin combines teleportation, inventory management, moderation commands, and many more features in one package.
DiamondsToBank
deposit Diamonds to virtual bank!
HandyCommands
A small and lightweight plugin that aims to add some very useful features.

Create: No Contraption Backpacks
Minecart contraption item storage must be empty to pick it up as an item
Kits Flow
A lightweight and fully configurable kit plugin with GUI, admin commands, chat input system and full config support.
Simply Sorted
Simply Sorted is a client-side Fabric mod that makes organizing your Minecraft inventory simple. Create rules for your inventory slots and let matching items automatically find their place.

Adaptive Functional Storage
Adds an FE-powered adaptive storage layer to Functional Storage with dynamic drawer displays, shared network access, and crafting.
RamManager
RamManager is a lightweight Spigot/Paper plugin that automatically monitors server memory usage and triggers garbage collection when RAM usage exceeds a configurable threshold, preventing lag and out-of-memory issues.
Totes
Storage mod for Minecraft 26.1+