This inheritance list is sorted roughly, but not completely, alphabetically:

[detail level 123]

CAddressHelper	AddressHelper
CAngle	A compass bearing angle measured in degrees, with wraparound arithmetic
CStringUtil::Bitap	Implements BITAP algorithm for fuzzy search
CCircle	Represents a 2D circle with centre and radius, supporting geometric queries
CCryptoUtil	CryptoUtil
CDateRange	A time range defined by a start and end QDateTime
CDateTimeUtil	DateTimeUtil
CEarthGeo	Physical constants and cardinal bearings for Earth-based geodetic calculations
CEllipse	A 2D ellipse defined by a centre point and two semi-axis lengths
CEntityMetadata	A typed, role-keyed data container for passing objects through model/view layers
CFileUtil	FileUtil
CFlatGeo	Static helper methods for 2D (flat / Cartesian) geometric computations
CFloatUtil	Static floating-point utility helpers
CGeoCircle	A geographic circle defined by a GeoCoordinate centre and a radius in metres
CGeoCoordinate	A WGS-84 geographic coordinate (latitude, longitude, altitude)
CIDeserializableFromDomElement	Interface for objects that can deserialize themselves from a QDomElement
CIDeserializableFromDomNodeList	Interface for objects that can deserialize themselves from a list of QDomElements
CIDeserializableFromJson	Interfaces for deserializing objects from JSON
CIDeserializableFromJsonArray	Interface for objects that can deserialize themselves from a QJsonArray
CIDeserializableFromJsonObject	Interface for objects that can deserialize themselves from a QJsonObject
CIDeserializableFromXml	Interfaces for deserializing objects from XML
CISerializableIntoDataStream	Interface for objects that can serialize to and deserialize from a QDataStream
CISerializableIntoJsonObject	Interface for objects that can serialize into an existing QJsonObject (in-place variant)
CISerializableToByteArray	Interface for objects that can serialize to and deserialize from a QByteArray
CISerializableToDomElement	Interface for objects that can serialize themselves to a QDomElement
CISerializableToDomElementList	Interface for objects that can serialize themselves to a list of QDomElements
CISerializableToJson	Interfaces for serializing objects to JSON
CISerializableToJsonArray	Interface for objects that can serialize themselves to a QJsonArray
CISerializableToJsonObject	Interface for objects that can serialize themselves into a QJsonObject, with JSON helper utilities
CISerializableToXml	Interfaces for serializing objects to XML
CJsonHelper	JsonHelper
CStringUtil::Levenshtein	Implements the Levenshtein algorithm to determine the distance between two strings
CLine	Represents a 2D line segment between two Point endpoints
CLog::LogCategory	A named logging category with an associated minimum log level
CLog::LogEntry	Immutable record of a single log event
CLog::Logger	Core logger class supporting console, file, syslog, and consumer outputs
▼CLoggingBaseClass	Mixin base class providing categorized logging at four nesting levels
▼CAbstractThreadClass	Abstract base class for QObject-based workers that run in a dedicated QThread
CTcpServerClientObject	Manages the lifetime of a single accepted TCP (or SSL/TLS) client socket
CUdpServer	A UDP server that receives datagrams and queues outgoing datagrams
CTcpServer	Abstract TCP server supporting both plain-text and TLS/SSL connections
CMutexEvent	MutexEvent
CPathRouter	Orthogonal path-routing algorithm that navigates around rectangular obstacles
CPathUtil	PathUtil
CPolygon	A 2D polygon defined by an ordered list of vertices
CProcFsUtil
CProcUtil	Static utilities for querying running Linux processes via /proc
▼CQException
CCommonException	CommonException
▼CQList
CDateRange::List	A sortable, consolidatable list of DateRange objects
CEntityMetadataList	A list of EntityMetadata objects with type-filter support
CLine::List	A list of Line objects with spatial query helpers
CLockingQueue< T >	LockingQueue
CPoint::List	A list of Point objects with corner-finding helpers
CRectangle::List	A simple list type for Rectangle objects
CSerializableJsonList< T >	Template helpers for serializing and deserializing lists of JSON-capable objects
CSerializableJsonPtrList< T >	A QList of QSharedPointer<T> that serializes/deserializes its elements via ISerializableToJsonObject
CSerializableXmlList< T >	Template helper for serializing and deserializing lists of XML-capable objects
CTimeSpanRange::List	A QList of TimeSpanRange objects with a consolidated() helper
CTreePathVertice::List	A list of TreePathVertice pointers
▼CQMap
▼CKANOOP::EnumToStringMap< LogLevel >
CLog::LogLevelToStringMap	Bidirectional map between LogLevel values and their string names
CKANOOP::EnumToStringMap< T >	A QMap subclass providing bidirectional enum-to-string lookups
CTreePathVertice::Map	A map from hash-name string to TreePathVertice pointer
▼CQObject
CAbstractThreadClass	Abstract base class for QObject-based workers that run in a dedicated QThread
CLogConsumer	A QObject-based sink that receives log entries from the logging system
▼CQPointF
CPoint	A 2D floating-point point extending QPointF with movement and spatial query methods
▼CQRectF
CRectangle	A 2D rectangle extending QRectF with edge, corner, and geometric query helpers
▼CQSizeF
CSize	Extends QSizeF with convenient grow/shrink operations and Rectangle conversion
▼CQTcpServer
CTcpServer	Abstract TCP server supporting both plain-text and TLS/SSL connections
CRateMonitor	RateMonitor
CSpanningTree	A Dijkstra-based spanning tree for finding shortest paths through a line network
CStringUtil	StringUtil
CThreadUtil	ThreadHelper
CTimeSpan	TimeSpan
CTimeSpanRange	An interval of time defined by a start TimeSpan offset and an end TimeSpan offset
CTreePathVertice	Represents a single vertex in the spanning-tree graph used by PathRouter
CTriangle	A 2D triangle defined by three vertices
CUnicode	A lookup table for commonly used Unicode special characters
CUserUtil	UserUtil