Client-side tools/mods

A high-performance rendering engine replacement for Minecraft, which greatly improves frame rates and reduces micro-stutter.

A modern shader pack loader for Minecraft intended to be compatible with existing OptiFine shader packs

Using async path-tracing to hide Block-/Entities that are not visible

Adds a mod menu to view the list of mods you have installed.

Displays a map of the nearby world terrain, players, mobs, entities in the corner of your screen. Lets you create waypoints which help you find the locations you've marked.

Adds a full screen world map which shows you what you have explored in the world. Works great together with Xaero's Minimap.

A Sodium addon that adds features that shouldn't be in Sodium.

Food/hunger-related HUD improvements

Render the player skin layer in 3d!

A working voice chat in Minecraft!

Reduce resource usage while Minecraft is in the background, idle, or on battery.

Adds dynamic lights to Minecraft as the most feature-complete and optimized dynamic lighting mod.

View the contents of shulker boxes from your inventory

Blazing fast custom GUI textures on Fabric and Quilt with built-in OptiFine custom GUI resource pack support

A client-side schematic mod with extra features for creative mode work

A mod implementing the OptiFine/MCPatcher animated texture format

Allows for render distances greater than the server's view-distance

Fusion allows resource packs to use additional texture and model types such as connected textures!

A mod that modifies the vanilla player model

Take full control over your vanilla game

Record your Minecraft gameplay, play it back and create stunning cinematic shots

JEI/REI/EMI plugin that displays breeding information

Various client-side tweaks, such as hand restock, hotbar swap/cycle, flexible/fast block placement etc.

Enhance your gameplay experience with animated UI components

A "mini F3" HUD mod, also with various overlays like light level, spawn chunks, slime chunks etc.

The Female Gender Mod introduces extra player model customization options, including a unique feature that adds a personalized touch to your avatar.

A client mod that adds many shortcuts to move items easier and craft faster in inventory screens

Makes it easier to compare equipment by showing a tooltip for what you're already wearing.

Syncmatica is a mod which aims to mod into litematica so that schematics and their placements can be easily shared.

displays block-light level on top of the solid blocks