Minecraft Java 1.21 Mods
Browse 437 free mods for Minecraft Java 1.21 — popular picks include More Villages Datapack, [AI slop] Polymer Patch for Guard Villagers, DefaultXL.
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More Villages Datapack
Adds more villages to the game.
[AI slop] Polymer Patch for Guard Villagers
Polymer Patch for [AI slop] Guard Villagers made 99% by AI
DefaultXL
Minecraft vanilla improved! This resource pack enhances the classic Minecraft aesthetic with selective texture updates, Stardew Valley-inspired GUI, OptiFine-enhanced features like more mob varieties and custom enchantment book textures, and much more!
Totem Doll
Let you replace the appearance of the Totem of Undying with selectable Minecraft-style dolls
Kappa's AntiCheat
A lightweight Fabric anti-cheat designed for high performance on large-scale servers.
More Trapdoors!
This datapack improves trapdoor crafting by making each recipe yield 6 trapdoors instead of 2. Now you get more value from your wood, making it easier to build and decorate!
PaperResources
Load multiple resource packs instead of merging them!
Enhanced Hoes
Hoes can mine more blocks!

Translucent Lava
simple mod which makes lava look like water
CobbleSpawnRegions
This mod adds region based custom cobblemon spawning
Vader's CTM Programmer Art Bricks Pack
(1.7.2 — 1.20.6+) Adds 8 CTM brick variants with Optifine for Programmer Art. Ported from @Vaderman24's Vader's Alternative Programmer Blocks Pack. 'V1.0.0'
Stennos Clear Glass
✨ Simple Vanilla Clear Glass ✨ No Optifine or Connected Textures needed
Scoreboard Health Indicators
Displays scoreboard-based health values as clean, visible health bars above players and entities, even when internal health is hidden.
Just Enough Building Blocks
Adds a variety of different building blocks. Vertical slabs, and more.
Craft Stairs Right!
This Project changes the crafting for all stairs to cost 3 wood and give 4 stairs, because A stair is 3/4 of a block 3 blocks must give you 4.
Faithful Fusion Connected Default Glass 32x Add-on
Makes Faithful 32x default glass textures connected for non-Optifine users.
HXS's_Animation_Optimization
Optimization of actions for my mod
Tree Recovery
Repair accidentally peeled bark. | 誤って剝がしてしまった樹皮をもとに戻します
QOL-MC
Quality of Life MC adds multiple mods for decorating, exploring, and feeling immersed. New version and changes coming soon! If you have any suggestions please contact me!
Natural Textures
Gives blocks variation and removes grid-like patterns by adding rotated and mirrored variants. No Optifine required. Works with any resource pack.
ArmorDurability
Peek into your enemy's armor durability.

ShowPlayTimer
ShowPlayTImer gives you full control over your playtime and timers
OptiGrass
Optifine's Better Grass on Sodium/Vanilla! Looks better with Continuity.
Ytgld : Better Beacon
This mod modifies the light logic of the beacon

Wynncraft Fast Grass
Optifine's Fast Grass for Wynncraft
QuickChat - Folia support and Redis
Modern chat plugin with formats, placeholders, private messages, colors, and full customization.
Celestial Mist
A cool galaxy sky overlay compatible with Optifine/Skyboxify!
Tokyo Ghoul - Fabric
This pack brings the dark and captivating world of Tokyo Ghoul to Minecraft, with completely reworked animated hotbar graphics and a unique aesthetic that fans of the series will love.
G1axFixer
G1axFixer is a client-side Fabric mod that fixes resource pack crashes and optimizes network, rendering, and ticking for maximum FPS and smooth combat.

Craftable Painting Variants
A data & resource pack that allows you to craft all the painting variants along with giving them individual textures.
Trident to Playing Card
Turns the trident into a playing card with custom sounds :D i think you need optifine, not 100% sure
ItemDisplayPlugin
This plugin allows the collection of items dropped within a 5-block radius in Minecraft, merging the items with the same type and displaying their quantity in the item’s custom name. Items that cannot be stacked, such as enchanted equipment (e.g., swords,
Seasonal Ambiance
Adds dynamic falling particles on screen with GPU-accelerated, reflecting holidays and seasons with customizable effects
Considerable original [co1]
Original Aesthetic Performance Master: Greatly improves FPS, optimizes memory footprint, and adds refined interface improvements and original-style decoration options for a smoother, more aesthetically pleasing authentic experience.
AI Builder
AIBuilder is a Spigot plugin that uses DeepSeek to generate JSON build plans from prompts and automatically constructs them inside a selected region with optional streaming, validation, and AI bot control.
Desolate Pale Garden
A datapack which removes all hostile mob spawns in the Pale Garden except the Creaking, which adds to the ambiance of the biome!