This page is still work in progress.
The KDEWebKit library sits on top of QtWebKit, providing KDE integration (for example, WebActions using KDE icons and shortcuts, downloading using KIO, etc).
See the following link for a list of all classes: http://api.kde.org/4.x-api/kdelibs-apidocs/kdewebkit/html/annotated.html
KIO::Integration::AccessManger, KIO::Integration::AccessMangerReply (before: KNetworkAccessManager, KNetworkReply)
Overwrites the default QtNetwork based QNetworkAccessManager for KIO-based network-interaction. Also supplies a few special additions (like the rest of KDEWebKit does).