The HtmlViewer component set consists of the THtmlViewer, TFrameViewer, and TFrameBrowser components. All three are HTML document display components:

THtmlViewer * The basic component. * THtmlViewer displays single (non-frame) documents. * It also forms the basis for the other two components.
TFrameViewer * Displays both frame and single HTML documents. * TFrameViewer is oriented more for local file system use.
TFrameBrowser * Also displays frame and single HTML documents. * TFrameBrower is oriented for use with local file systems and toward Internet style protocols and URL usage. * Additional code and/or components are generally required to get data from other sources than the local file system.