In Control!

3.5.5:

• Addded a ctrlshowmobs command that lists all available mob id's that you can use in the config (in the console output or log)
• New ctrlkill command to kill all entities of a certain type: 'all' will kill every entity (including drops but not players). 'hostile' will kill only hostile mobs, 'passive' only passive, 'entity' only non-living entities. You can also supply the name of the entity to kill (like 'ctrlkill minecraft:enderman' on 1.11) and an optional dimension id