Minecraft 1.21.3 Mods
35 of the 117 mods here have a build for Minecraft 1.21.3. 1.21.3 needs jars that were built for 1.21.3. Utility 13, Library 7, Performance 6 are the biggest groups on 1.21.3. Fabric 34, Forge 31, NeoForge 30, Quilt 14 is how 1.21.3 splits over the loaders.
25 makers publish something for 1.21.3. Check the loader as well as the number: 1.21.3 exists per loader. 5 of the 1.21.3 mods want a library beside them. Every mod on this 1.21.3 list also reaches another version.
- Mods for this version
- 35 of 117 documented here
- Loaders
- Fabric 34 · Forge 31 · NeoForge 30 · Quilt 14
- Biggest groups
- Utility 13 · Library 7 · Performance 6
- Download here
- 21 files on our own server
The core API module for Fabric mods providing essential hooks and utilities required by nearly all Fabric mods.
A configuration screen API that provides a standardized way for mods to display and edit their settings in-game.
A real-time mapping mod that renders explored terrain as a minimap and fullscreen map with waypoints and mob tracking.
A cross-platform modding API that allows developers to write mods compatible with both Forge and Fabric from a single codebase.
An animation library for Minecraft mods that enables complex entity animations created in Blockbench.
A tooltip mod that shows information about what you are looking at, including block details, entity info, and mod data.
The leading rendering optimization mod for Fabric, dramatically improving frame rates through a rewritten rendering engine.
One of the most popular biome mods, adding over 50 new biomes with unique terrain, vegetation, and atmosphere to world generation.
A lightweight minimap mod with entity radar, waypoint management, cave maps, and a customizable display position.
Enhances inventory management with improved mouse dragging behaviors for faster item manipulation.
A fullscreen world map companion to Xaero's Minimap showing explored terrain with waypoints and cave layer navigation.
Adds a search bar and conflict detection to the keybinding settings screen, essential for modpacks with many keybinds.
Adds hunger and saturation information overlays to the HUD and tooltips, showing food value before eating.
A cross-loader abstraction library used by Waystones, Cooking for Blockheads, and other mods by BlayTheNinth.
Adds placeable waystones that players can attune to and teleport between, providing a convenient fast-travel system.
A server-side optimization mod that improves game logic performance including entity AI, world gen, and block ticking.
A shader mod for Fabric that allows OptiFine shader packs to be used alongside Sodium for maximum performance.
A recipe viewer and item browser for Fabric and Forge, serving as a feature-rich alternative to JEI with plugin support.
A modding library required by Alex's Mobs and Ice and Fire providing animation systems, entity utilities, and data tools.
A storage mod adding compact drawer blocks that display their contents visually, with upgrades for capacity and features.
Adds a multiblock kitchen with a recipe book that shows all food you can cook from your available ingredients.
A memory optimization mod that reduces RAM usage by optimizing block state storage and other internal data structures.
Groups XP orbs together into a single entity, reducing lag from large numbers of orbs in mob farms and grinders.
A compass that can locate any biome in the world, displaying distance and direction to help players find specific biomes.
Lets players pick up and carry blocks, tile entities, and even mobs by shift-right-clicking, and place them elsewhere.
A vanilla-style biome overhaul using only vanilla blocks, adding dramatic terrain features and over 85 new biomes.
Adds a wide variety of aesthetically designed doors and trapdoors in multiple wood types and styles for building.
An advanced inventory management mod with auto-sorting, auto-refill, profile saving, and locked slots.
Adds sloped roof blocks, gutters, attic walls, and skylight blocks for building realistic rooftops in every material.
An animation library enabling mods to add custom player animations, required by Better Combat and other combat mods.
Optimizes immediate-mode rendering used by HUDs, GUIs, text, and item displays for a notable FPS boost.
Adds a variety of bridge components including supports, stairs, railings, and rope bridges in multiple wood types.
A furniture mod adding chairs, tables, desks, drawers, wardrobes, and other home furnishings in every wood type.
A terrain overhaul mod that generates dramatically larger mountains, deeper valleys, and more varied continent-scale landforms.
Generates massive multi-level dungeon towers below the surface with varied rooms, traps, spawners, and loot.
Frequently asked questions
What is there for 1.21.3?
35 of the 117 mods documented here ship a 1.21.3 build, from 25 makers. They split as Fabric 34, Forge 31, NeoForge 30, Quilt 14.
Which loader should I use on 1.21.3?
Fabric carries the most here on 1.21.3, 34 mods. A mod is built per loader and per version, so the file has to match both. One profile runs one loader.
Is a 26.2 jar fine on 1.21.3?
No. A jar is compiled against one game version. A build for 26.2 will not load on 1.21.3, and the other way round it fails too. The mod page names every version its maker signed off.
Where do 1.21.3 downloads come from?
21 of the 1.21.3 files sit on our own server, unchanged, with the checksum of the maker's build beside them. The rest link to the maker because his licence keeps every right with him.