Here are the packages with brief descriptions (if available):

[detail level 1234]

NAC
▼NICode
NActions
NConditions
NKeraLua
▼NLanguage
▼NLua
NLibrary
▼NMakinom
▼NSchematics
NNodes
▼NNLua
NEvent
NExceptions
NExtensions
NMethod
▼NORKFramework
▼NEvents
NSteps
▼NPixelCrushers
▼NDialogueSystem
NActionRPG2D
NAdventureCreator
NARPG
▼NArticy
NArticy_1_4
NArticy_2_2
NArticy_2_4
NArticy_3_1
NAurora
NBehaviorDesigner
NChatMapper
NCinemaDirector
NCoreGameKit
NCorgiEngine
NDaikonForgeGUI
NDeftlySupport
NDialogueEditor
NEmeraldAISupport
NExamples
NFaceFX
NHUDWaypointSupport
NI2Support
NICode
NInkSupport
NInventoryEngineSupport
NKGFMapSystem
NMakinomSupport
NNGUI
NORKFrameworkSupport
NPlayMaker
NplyGame
NRealisticFPSPrefab
NRewired
NRogSupport
NRPGKit
NSequencerCommands
NSInventory
NTextMeshPro
NThirdPersonControllerSupport
NTK2D
NTopdownKitSupport
NUFPS
NUniStormSupport
NUnityGUI
NRog
▼NSlate
▼NActionClips
NDialogueSystem