CursedFlames

Makes the singleplayer world icon update each time the world is loaded.

Rotten flesh inflicts Pale, which causes damage in sunlight, instead of Hunger.

Allows nametags to be used on players - depending on config you can rename yourself, other players, or both.

Completely removes item durability

Makes potions of all types stack to 16.

Hoppers containing buckets remove and add fluids from the world.

Stops players' attack cooldown from resetting when they switch items.

Dye the top and bottom half of shulker boxes independently.

Random modifiers for equipment, that give minor buffs/debuffs

Disable increasing repair/enchant cost on items in anvils