QT Webkit

When using the Qt WidgetSet, you can use the Qt WebKit to embed a browser into a LCL form.

Lazarus LCL/Qt WebKit Demo available on FPC Qt4 Binding Web Page

THtmlPort

THtmlPort is a Lazarus/Free Pascal version of Dave Baldwin's HTML Components, including THtmlViewer, TFrameViewer and TFrameBrowser.

THtmlPort wiki page

GeckoPort

GeckoPort is a Lazarus/Free Pascal version of Takanori Ito's Gecko SDK for Delphi, including the TGeckoBrowser component.

GeckoPort wiki page