More posibilities how to kill mobs/players
SFENCE

Add more posibilities how to kill mobs and/or players, like traps, throwable TNT, etc.

Visual Harm 1Ndicators
Mantar

HP bars for mobs/players

Traders
Sokomine

Configurable mobs/NPC which can trade for you.

Mobs Skeletons
TenPlus1

Adds three skeletons to the world.

Mobs Ghost Redo
TenPlus1

Adds ghosts.

Skeleton
AntumDeluge

A skeleton mob.

Tortou
LibraSubtilis

Turtle graphics, hyperloop travelingsystem and cubic mobs.

Cube Mobs
Xanthus

Adds various cube mobs with different abilities using mobkit.

Wisps
ElCeejo

Adds non-entity mobs called Wisps

Not So Simple Mobs
TenPlus1

Adds a host of creatures into your world with new weapons too.

Throwable Bombs
DragonWrangler

adds a cave expansion tool, a throwable tnt stick, a throwable smoke bomb, and a mob throws tnt

Mob Core
mt-mods

A Mob API meant to expand upon mobkit and bring easy to use features for creating new Mobs.

Slimes Redo
TenPlus1

Add green and lava slimes to your world.

MobConf
zeuner

Place, remove and configure Mobs (for now: NPCs) using chatcommands

mime (flux's fork)
fluxionary

adds a monster mimicking its surrounding nodes.

Moblib
LMD

Low-level high-performance entity library

Spawners
SaKeL

Adds spawners for mobs, dungeons, temples and ores.

Mob Mese Monster Classic
TenPlus1

Adds classic Mese Monster.

Mobs Monster
TenPlus1

Adds many types of monster.

Alive AI
AiTechEye

Advanced survivor ai mobs (npc, monsters and more)

Balrog Sword MT 5.4
DragonWrangler

allows those using the old mobs balrog mod to have balrog swords

S Battlehammer
Stakbox

Adds a battlehammer weapon with high knockback for MTG (compatible only with Mobs Redo API).

Mobkit Sapien
LuantistDork

Adds villager like mobs using Mobkit.

Mobs Animal
TenPlus1

Adds farm animals.

Zoonami 3D Mobs
isaiah658

Adds 3D monster mobs to Zoonami.

Banshee
ElCeejo

Adds Banshees, a ghostly mob that haunts pine forests

Juha Get
Juha (CraftPlay777)

Gives you any block, liquid, or mob spawn egg you're looking at

Vegan Misc.
AirplaneMan

Adds vegan alternatives for there are no mob drops avialable

Mob Horse
TenPlus1

Adds rideable horse

Raids
DragonWrangler

Allows server owners or server admin to start mob raids to attack settlements or players

Mobkit
mt-mods

Entity API

Mobile Crosshair
GreenXenith

It's a crosshair for mobile.

Water Mobs
TenPlus1

Water Mobs for Mobs Redo

The Mob API
TX_Miner

Provides a simple API for mobs

Wilhelmines Living Caves Mobs
mt-mods

adds mobs to the caves of your world

3D Armor Mobile
LandarVargan

Adds a command to bring up a formspec that allows mobile users to put on armor

Mobs Effects
SFENCE

Provides predefined attribute effects without apply logic for mobs based on Mobs Redo API, modifying movement, combat, and behavior attributes

Grave
ElCeejo

Adds an eerie biome with multiple mobs.

Invisiblocks
TenPlus1

Add invisible barrier, light and mob wall into game with new tool

Hud Hider
Hito Hito

Make your hud invisible on mobile.