Non-Vanilla Optimizations

Improves performance by tweaking mob despawn rules. Say bye to pesky unintentional persistent mobs.

An efficient and non-locational redstone dust implementation

Removes (annoying) rollbacks

Only load server resource packs when necessary

Disable unnecessary portal checks that cause lag.

ItemClearLag (ICL) is a Minecraft mod designed to improve server performance by periodically removing items from the ground.

Server-side mod to keep world size down by not saving all chunks

OptiFine's Fast Math feature re-implemented as a Fabric mod.

Block unwanted network connection