Minecraft Java 1.21 Mods
Browse 3,590 free mods for Minecraft Java 1.21 — popular picks include HighMod, Book Edit: Vanilla book editor, Slayer Quests.
Updated daily
HighMod
HighMod is a early mod which adds custom dimensions , items, blocks, armour, custom entities and more! It doesn't require GeckoLib to load custom entities
Book Edit: Vanilla book editor
A spigot plugin that allows a player to add colors and effects to texts in books in vanilla
Slayer Quests
Serverside mod that allows Nitwits to assign OSRS slayer style quests, also works as a library for adding quest functionality to your own mobs
Takion
Takion is a powerful Spigot library for advanced chat, text formatting, and messaging utilities in Minecraft plugins.
Rock's lib
Library for roooksasjiu's mods
![[UNSUPPORTED] T-MiniGameAPI - library for creating Minecraft minigames.](https://pub-2ae937f770284535a96c3330f91236aa.r2.dev/thumb/spiget/244908.webp)
[UNSUPPORTED] T-MiniGameAPI - library for creating Minecraft minigames.
T-MinigameAPI is a modern, flexible, and easy-to-use library for creating Minecraft minigames.
More Cobblemon Sound Events
Adds a collection of extra Cobblemon sound events, making it easier for both resourcepack and modpack creators to customise audio.
CookieLib
A custom client-side library mod
MCAnim
A library for display entity animation in Minecraft
Kekusis' Muskets & Flintlocks
Fully server-side mod that adds cool animated flintlocks to your game. Possible thanks to the Polymer library.
CS HOME
A simple home system. /home opens a GUI showing all player homes.
The Crafting Collective
an RPG magic and mechanical style modpack meant for exploration and player empowerment.
Passive Aggressive Sound
Dependency of the Passive Aggressive datapack.
Open Parties and Claims Chunk Shop
Addon for OPAC open parties and claims for chunk trading and buying additional bonus chunks
qLibs
Personal library for Minecraft 1.21.1 modding. Fabric + NeoForge via Architectury. Probably needed for most mods I release. Open source, free to use. Hope it's helpful.
Disx Plus
Adds new custom discs to minecraft!
CompatLink - Epic Fight Weapons Compat
Give ANY modded weapon Epic Fight movesets — no coding, just JSON.
OP Blocks MOD For Java Edition
Every block you break is OVERPOWERED! Massive drops, diamonds, explosions and OP effects on every break!
FlansKnowledgeLib
A Library Mod For My Mods
Player Abilities
Adds an extensive and customizable ability framework to grant players active, passive, and triggered abilities.
T0PK4_lib
This is a next-generation bugfix mod required for ModderEFGS's and T0PK4's mods to work.
Dummy Items
a small mod that adds dummy items for map makers and datapacks
AI Crafter
Minecraft AI Assistant brings the power of Google Gemini AI directly into your Minecraft world! Get instant help, answers, and even execute commands through natural language all powered by cutting-edge AI technology.
![CraftVentory | Create configurable inventories! [1.17+]](https://pub-2ae937f770284535a96c3330f91236aa.r2.dev/thumb/spiget/165781.webp)
CraftVentory | Create configurable inventories! [1.17+]
An amazing library that makes inventory configuration and loading easier for developers.
RankedSMP-Better
Youtubers (SharpnessMc , Wemmbu , Flamefrags , etc) Inspired PaperMC plugin for Minecraft 1.21.x that adds a competitive ranking system with unique abilities, extra inventory, and more.
Statsreader (Bedwars GommeHD.net)
StatsReader shows BedWars player stats directly in the TAB list on GommeHD.net using a community-updated database that syncs via /stats.
InvItemMark
Mark and display items in containers or your inventory to other players.
LaunchPlates
Minecraft paper plugin for creating customizable launch plates able to boost players in certain directions
Easy Bee
A completly new way to trasport bees with extra tweaks
ServUI
A user-interface based library useful for creating front-end UIs for existing game screens on both NeoForge and Fabric
SOLEA API
SoleaAPI is a utility mod that combines homes, warps, TPA, teams, moderation, and combat-log tools into one configurable package with dynamic prefix support and EN/FR localization.
DataTip
JSON-driven custom item tooltips via resource packs. Multi-language, rich text, NBT/condition matching, shift-protected display. No coding — just JSON.
Prism Perms
Cross‑platform permissions plugin for Bukkit, BungeeCord, and Velocity. Lightweight YAML storage, simple commands, and rich stats tools (groups/users, ungrouped/missing/list, names cache) with pagination and safe output chunking.
Idle Generators
Place a generator and let it work, even offline. Craftable block-generators that produce resources passively over real time, with a live HUD and full Cloth Config support.
Fiw Custom Items
A data-driven custom items framework for Fabric or NeoForge. Define NBT, Attributes, configurable abilities, mechanics, curses, upgrades and more entirely through JSON no coding, no restarts.
Yiv's API
Shared API for Yiv’s mods: client events, conditional mixin plugin, and small compat helpers.