CreeperHost

Better Sprinting by chylex

tweak clientside util

Meals by meew0

A mod that adds configurable food.

opensource food util tweak

MineTweaker by Stan Hebben

Modpack and server tool enabling the addition and removal of recipes

util tweak

Mob Properties by FatherToast

This mod allows you to customize all mobs, vanilla or otherwise, with completely configurable drops, attributes, equipment, potion effects, and even NBT data.

mobs tweak

StartingInventory by DaftPVF, bspkrs

Allows you to define a list of items that will be given to the player when starting new worlds.

smp tweak util opensource

Treecapitator by DaftPVF, bspkrs, Lunatrius

Treecapitator is a mod that scares trees. Seriously, they are terrified of it.

tweak util opensource

WorldAndGenerationTweaks by Thebombzen

WorldAndGenerationTweaks provides various assorted tweaks to terrain generation.

worldgen tweak