Fabric Mods for Minecraft 1.21
Browse 16 free Fabric mods for Minecraft 1.21 — popular picks include Jobs+, Luish's Guns Crafting Add-on, Keystone Expansion Pufferfish's Skills.
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Jobs+
Adds 10 jobs to Minecraft. You can now add your own jobs!
Luish's Guns Crafting Add-on
Add-on for Luish's Guns that adds crafting recipes
Keystone Expansion Pufferfish's Skills
MMO-style skill tree expansion for Puffish Skills, adding new progression categories like Combat, Mining, Exploration, Farming, Crafting, Building, Magic and Taming.
Solstice Dynamic Seasons
Experience a living world with Solstice: Dynamic Seasons, a 14-step seasonal simulation . Features realistic weather, shifting daylight, biome-aware snow, and custom crop growth. The ultimate Minecraft atmosphere!
Matthiesen Core
A library mod for NeoForge and Fabric that enables developers to create mods with a shared common codebase.

Nixienaut
A common code Library.
Chat-With-NPC
Chat-With-NPC allows players to freely chat with NPCs, who will answer questions based on his setting (Basic Prompt) and the setting of their Groups (Nation, City, Town ,etc.). Suitable for RPG maps or puzzle maps.
Easy Model Entities
Turn Blockbench models into simple Minecraft entities without writing Java code.
Common Storage Lib
A library mod abstracting Capabilities/ApiLookups, Data Attachments, and Item/Fluid/Energy Storage for NeoForge and Fabric
One punch Man (Anime)
Experience the power of One Punch Man in Minecraft! This Fabric mod adds insane strength, abilities, and anime-inspired gameplay. Fabric API required.
Every API
As you read the name this modpack adds all the API's that are present in the Minecraft API library. You can now download any mod without worrying about the API's that you will need to find manually, just download this modpack and you're all set.
ai-assistant
Adds an in-game AI assistant that answers your questions using Mistral. Use /ask to chat directly from Minecraft.
SimpleCore by Cooshh
A shared core library for Simple mods, providing common systems like economy support and shared utilities.
Season System
Adds a dynamic season system to Minecraft with Spring, Summer, Autumn and Winter, seasonal weather, snow, melting ice, crop profiles, tooltips, temperature display and API support for mod integration.
Wild Creatures
Adds lively land, water and forest creatures to Minecraft with custom drops, duck eggs, GeckoLib animations, balanced spawns and optional mod integrations.
Auto Totem of Undying
Automatically equips a Totem of Undying to your off-hand, keeping you safe without manual effort.