Fabric Mods for Minecraft 1.21
Browse 20 free Fabric mods for Minecraft 1.21 — popular picks include New Shield Variants | Shields with Effects!, Rubinated Nether, More Music Discs [Fabric/Forge/NeoForge].
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New Shield Variants | Shields with Effects!
Adds awesome new shield variants with new features!
Rubinated Nether
Rubinated Nether is a Vanilla+ mod which adds the Nether Ruby into the game for utility, decoration and redstone.
More Music Discs [Fabric/Forge/NeoForge]
Adds more music discs
Carpet Extra
Additional features for the carpet mod
Holographic Renderers
Projects hologram of images, areas, entities, etc.
Bacteriums
Bacterium Mod For Fabric and Forge
Reden
Undo & Redo | Ctrl+Z | Mineacrft Debugger | Redstone Version Control | Any amazing features you can image!!!
AngleSnap
Save and snap to precise angles and camera positions, useful for redstone contraptions using Magic Mirror technology.
Amarong
Adds a new material called Amarong, handheld "rubber" ducks, kaleidoscopes, and rainbow beacons with no redstone required
Ghost Gear
Go on your own paranormal adventure using ghost gear!
像素城_魔法核心整合包【PixelCity_MagicCore Modpack】
《像素城》魔法核心整合包(1.21.11版),专注生存红石工程。为自动化系统、多人性能优化及技术向Minecraft玩法量身打造。PixelCity MagicCore Modpack (1.21.11) for Survival Redstone Engineering. Optimized for automation systems, multiplayer performance, and technical Minecraft gameplay.
Laseredstone
Redstone but we use lasers to transfer signals
Super Trims
A mod focused around providing a deeper endgame progression utilizing armor trims.
Temporal Disjunction
Temporal Disjunction is a Minecraft mod that lets you manipulate time within specific regions — freeze, rewind, accelerate, or slow it — giving you godlike control over the flow of time in your world.

Whitestone Mod
Added "Whitestone" electric system similar to Redstone, but removed the delay, and let the signal can transform vertically. And added a few bugs! Note: Developer misspell 'transmitter' into 'transformer'. This bug is already fixed in 0.3.0.
红石生电冒险优化[Redstone Power Adventure Optimization]
融合了多种优质模组与资源包,让玩家更容易上手mc,另外增加了红石生电优化,增加其实用性,以及游玩体验.(It integrates multiple high-quality mods and resource packs, making it easier for players to get started with MC. Additionally, it has optimized the generation of redstone electricity, enhancing it)
Noodlemancy
Builds upon the existing Minecraft magic systems with new redstone components, blocks, items, enchantments, and potions.
Gateways
A vanilla-esque teleport pad mod for both blocks and entities with redstone compatibility
Bacon SMP
The Bacon SMP is a mod that introduces custom weapons and a redstone-powered string duper to the game. The custom weapons are crafted from valuable materials. This mod is still in development. There are many bugs.
Calibrated Spawners Expanded
A mod that let you calibrate and customize mob spawners.