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

[detail level 123]

▼NHexagon
▼NStateMachine
CAbstractTransitionFactory	Serves as a base class for creating transition factories that generate transitions between states in a state machine with specified parameters. Helps providing a fluent pipeline interface for defining transitions
CBlendTransition
CBlendTransitionFactory
CExternalMachineEvent	Base class for all finite state machine events
CState	Base class for a state within a state machine
CStateMachine	Universal state machine implementaion. see State machine notes for more information
CTransition
CTransitionFactory
CTransitionGroup
CHexAssets
CHexath	Class for static math operations
CHexAudioRandom	Class for audio random manipulations
CHexCollections	Class for extensions over collections, such as lists, arrays or IEnumerable-s
CHexColor	Provides extension methods for Unity Color and Vector3 types to simplify common color transformations and formatting
CHexCoroutineRunner	Should be attached to any one object on each scene where Hexagon is used. Provides access to the MonoBehaviour functions such as Coroutines. If this functionality is of no need HexMain may be omitted
CHexDebug	Class for easy debug of multiple objects
CHexEasing
CHexEnum
CHexRandom
CHexString
CHexTime
CHexTransform
CHexVectorAxisOps	Class for axis operations for all types of vectors
CHexVectorGeom
CHexVectorMath
CHexVectorOps	Class for general vector operations (multiplication, division, and absolute value) for all vector types
CHexVectorUtils	Class for utility operations involving vectors: Conversion operations Distance functions Nearly equals functions
CPool	Manages a collection of objects that can be reused, tracking their state via a delegate. This implementation relies on an external function to determine if an object is active or inactive. Operations that search for objects, such as Get() or ViewExistingInactive(out T?), have a performance cost that scales linearly with the total number of items. See Pool notes Hexagon Pool Notes
CVector2IntSwizzles
CVector2Swizzles
CVector3IntSwizzles
CVector3Swizzles
CVector4Swizzles