Mods for 1.21.9
55 mods match your filters.
Memory usage optimizations
No-compromises game logic optimization mod, useful for both single-player games and multi-player servers.
A mod to optimize the Minecraft networking stack
Massively increase render distance without harming performance.
A simple mod to fix various problems with packets, nbt and timeouts.
Pre-generates chunks, quickly and efficiently
A Fabric mod based on Starlight that improves the performance of light updates in Minecraft.
Improve and tweak Minecraft thread scheduling. Fork of Smooth Boot for ≥1.20
A fork of ModernFix that adds minor version update support.
Provides powerful network optimization capabilities for all mainstream systems.
This mods allows more precise manipulation of entity view distance on client and server
Optimize datapack / resourcepack zip file loading times
A lightweight mod that cleans old, unused log files
This mod fixes bug MC-260346, which causes custom music discs, when played in a jukebox, to be cut off when the vanilla disc would normally end.
A powerful and freely open-source optimization mod for Minecraft 1.12.2+, which fixes some issues in Minecraft and greatly improves its performance. It can replace many mods and all functions can be configured in the configuration file!
A fabric-carpet extension mod. It offers some interesting and useful features.
Optimize the network and provide additional support for Krypton Fabric.
Optimisation mod for the dedicated/integrated server.
Reduce GC pressure by safely eliminating Enum#values array cloning and memory allocation overhead through bytecode analysis
Just Enough Book (JEB) – Minecraft Recipe Book Mod
The vertical chunk section syncing mod.
Simulates zero latency by predicting server actions
Mod that aims to fix multiple issues with the Minecraft statistics 🤓
Optix Client is a cutting-edge, Fabric-based utility client built for players who demand performance and precision. Designed with a focus on PvP and minimalist aesthetics, it provides a seamless experience for modern Minecraft versions.