Here are the classes, structs, unions and interfaces with brief descriptions:

[detail level 1234]

▼NSineSpace
▼NScripting
►NClient
CSDialogues	Contains classes which interface with user interface dialogue windows, such as prompts and text entry dialogues
CSInput
CSIPCCallback
CSShared
CSTween
CSUI
►NComponents
CSAnalyticsEvent
CSAnimation
CSAnimator
CSAttachmentHelper
CSAudioReactiveAnimation
CSAudioReactiveBase
CSAudioReactiveLight
CSAudioReactiveMaterial
CSAudioReactiveParticleSystem
CSAudioReactiveTransform
CSAudioSource
CSAXModel
CSBoxCollider
CSBrowserSurface
CSCamera
CSCanvasGroup
CSCapsuleCollider
CSCharacterController
CSClickable
CSCloth
CSCollider
CSComponentBase
CSContentSizeFitter
CSEmbeddedVideo
CSEventCalendar
CSFurniture
CSGraphicRaycaster
CSHingeJoint
CSLight
CSLineRenderer
CSMeshFilter
CSMeshRenderer
CSModularVehicle
CSNavMeshAgent
CSNavMeshObstacle
CSNetworking
CSParticleSystem
CSPlayableDirector
CSPostProcessVolume
CSRectTransform
CSReflectionProbe
CSRenderer
CSRigidbody
CSRoomFloor
CSSceneBackgroundMusic
CSScriptingData
CSScriptingEvents
CSScriptingResources
CSScriptingRuntime
CSSeat
CSSkinnedMeshRenderer
CSSphereCollider
CSStateMachine
CSTerrain
CSTrailRenderer
CSUIButton
CSUICanvas
CSUIDropdown
CSUIImage
CSUIInputField
CSUILayout
CSUIRawImage
CSUIScrollbar
CSUISlider
CSUIText
CSUIToggle
CSUIToolTipHint
CSVirtualCamera
CSVoiceZone
►NCSharp
CSpaceScript
►NLibrary
CSMath
CSString
►NNetwork
CSChat
CSChatMessage
CSNetwork
CSNetworkMessage
CSNetworkMessageLua
CSPhotos
CSVideos
CSWebResponse
CSWebService
►NPlayer
CSEconomy
CSGameTester
CSGroup
CSInventory
CSInventoryItem
CSProfile
CSQuests
CSSocialMedia
CSUserProfile
►NRenderSettings
CSRenderSettings
►NScene
CSActivity
CSAudioAnalyser
CSCameraManager
CSGrid
CSHost
CSJourney
CSMarket
CSPersistence
CSPhysics
CSPostFX
CSScene
CSScript	Class accessible to all scripts
►NTypes
CSAnimationState
CSAnimatorStateInfo
CSAvatar
CSAvatarAppearance
CSAXParameter
CSColor
CSCommandBuffer
CSComponent
CSDateTime
CSGameObject
CSGenre
CSGroupInfo
CSJointLimits
CSJointMotor
CSJointSpring
CSLandmark
CSLayerMask
CSMaterial
CSMesh
CSMusicDirectory
CSMusicStation
CSMusicStationList
CSOutfit
CSParticle
CSPhysicsHit
CSPublicRegion
CSQuaternion
CSRay
CSRect	Implements a 2D Rectangle class
CSScore
CSScoreRank
CSSubRegion
CSTrackInfo
CSTuneIn
CSUIRaycastResult
CSUserRegions
CSVector	Implements a 3D Vector class used for storing positions & scales
CScriptClass
CScriptClassComponent
CScriptClassWrapper
CSResource