Minecraft Java 1.21 Mods
Browse 36 free mods for Minecraft Java 1.21 — popular picks include Insane's Survival Overhaul (aka IguanaTweaks Reborn), DulkirMod-Fabric, Better With Time: HC Tweaks.
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Insane's Survival Overhaul (aka IguanaTweaks Reborn)
Overhaul survival with many changes to existing mechanics. Weapon rebalance, enchanting rework, and much more
DulkirMod-Fabric
A Quality of Life Mod for Hypixel Skyblock
Better With Time: HC Tweaks
An add-on for the BWT mod which changes some features to be more "hardcore".
OmniCut: Better Wood, Copper, and Stone Cutter
OmniCut is a quality of life datapack: the Stonecutter cuts wood logs to wood items, cut oxidized copper doors, convert stone blocks back and forth, and recycle wood items. Prices are set in the spirit of the vanilla game with minor discounts, if any.
ArmorTweaks
Different armor and damage mechanics that make make survival more suitable for PvP.
Carpet Minitweaks
An extension for Carpet Mod with many toggleable survival-oriented game mechanic changes

JoaCarpet
A small carpet extension mod with useful features for redstone and storage tech (+some minor survival tweaks)
Flight Mod
Fabric mod that adds hunger-based flight for survival or client only creative flight tweaks
JSST
A suite of server-sided quality of life tweaks and survival-friendly tools.
Improper's 3D Minimap
Minimap but with 3D terrain. Enhance your survival caving experience with this radar!
SkyButtons
Utility mod for Hypixel Skyblock focusing on low-latency warp requests with a fancy new optional menu.
Simple Survival Tweaks
A mod that allows you to tweak various aspects of your survival world
kutils
A collection mod of client side qol features and tweaks from older pvp mods but for 1.21+, with unique skyblock and ui features.
TechMeg-Endless Survival-
TechMeg – Endless Survival is a challenging survival modpack that expands vanilla gameplay with progression tweaks, multiplayer-friendly mechanics, and enhanced exploration.
SkyFilter
Utility mod for Hypixel Skyblock. Loose cannon spam/scam filter.

Qualité de la vie
Adds Quality of Life features that everyone needs in their Survival and hardcore worlds and servers
Cauldron Concrete
Powder into a cauldron gets you concrete! Vanilla friendly and perfect for servers wanting a survival experience of the cauldron concrete functionality from Vanilla tweaks.
Simple QoL
This plugin aims to add simple quality of life recipes and tweaks to minecraft to make survival a little more enjoying than plain vanilla.
QoL
(1.21.5+), Adds Quality of Life features that everyone needs in their Survival worlds/servers (will also include some of my other datapacks/mods in here)
Nether Improvements
Configurable, survival friendly tweaks to make the Nether more interesting on Vanilla servers!
Villager Breeding Tweaks
A plugin that decreases villager breeding cooldown and growing age, making villager breeding and growth faster for survival servers and SMPs.

Beefy's Survival Utilities
A few nice utilities made by BeefyAndTheDucks.
[SW] Aether Tweaks
Simplifies Aether accessories to capes + gloves, replaces survival inventory with accessories screen, and restricts Sun Altar to OP players.
Unmount
Automatically break your Minecart on dismount! Quality of life addition for survival servers to clean up railways.
Survival Asterisk
Configurable tweaks to make survival more difficult including random respawns and reduced natural regeneration.
Cozy Server Kit
Lightweight server utilities for small survival servers: land claims, death chests, homes/TPA, starter kits, and more.
Ultimate Vanilla
A fully configurable collection of vanilla survival tweaks
mSurvival
A comprehensive, modular, and lightweight survival core that brings essential features like Home GUIs, Async RTP, and staff utilities into a single, high-performance package.
Route Helper
This is a QoL mod for skyblock that adds player relative waypoints. This is most usefull for routing out grottos easily.
KyuTweaks
"Slight" Tweaks and Additions for vanilla survival.
Quality Of Life Enchants
QOL Enchants QOL Enchants is a lightweight, high-performance plugin that adds three custom quality-of-life enchantments to your Minecraft survival experience. These are designed to make resource gathering smoother, faster, and more satisfying.
Carpet Minitweaks Mod (1.21.11, 1.20.1) – Extension for Carpet Mod
Carpet Minitweaks Mod is an extension for Carpet Mod with many small, mostly survival-related features and game mechanic changes. Features: Carpet Rules: In-game with /carpet list minitweaks By default, every rule is disabled, but can be enabled with /carpet (rule name) (value) Rules List: allChargedCreeperHeadsDrop All mobs killed by a charged creeper drop their head […]
JSST Mod (1.21.5, 1.20.1) – Custom Editors And Survival Enhancements
JSST Mod designed to enhance gameplay with quality-of-life tweaks and survival-friendly tools. It offers a suite of features like item, banner, and map editors, alongside gameplay enhancements such as beacon improvements and sapling replanting. It’s ideal for servers and single-player worlds aiming to streamline survival mechanics while maintaining a vanilla-like experience. Features: Includes a Banner […]
Armor Tweaks Mod (1.21.1, 1.20.1) – Tweaks Armor & Damage Mechanics
Armor Tweaks Mod makes some adjustments to the protection provided by different armor types and also tweaks the damage dealt by players wearing specific gear. The goal of these is to make the survival game more optimal for a PvP scenario. The list of changes as noted by the developer are given below. Features: Players […]
SurvivalTweaks [1.21.6+]✨ Better vanilla mechanics ✅
FREE! | Created to add some useful mechanics for useless items
Pragmatic Apparatus Mod (1.21.1) – Automate Resource Mining and Fly in Survival
Pragmatic Apparatus Mod brings classic utility tech, creative flight items, and automation blocks back to your world. It recreates many popular mechanics from older utility mods from the ground up. You can build powerful quarries to mine resources automatically while exploring brand new dimensions. The mod also adds simple item sorting pipes, huge storage drums, […]