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

QByteArray |
QIByteArray | Case-insensitive subclass of QByteArray
QFile |
QLocalFile | Locally accessible file
QHttpParser | Utility methods for parsing HTTP requests and responses
QIODevice |
QHttpSocket | Implementation of the HTTP protocol
QObject |
QHttpHandler | Base class for HTTP handlers
QFilesystemHandler | Handler for filesystem requests
QObjectHandler | Handler for invoking slots
QIODeviceCopier | Data copier for classes deriving from QIODevice
QTcpServer |
QHttpServer | TCP server for HTTP requests