The Mozilla ActiveX Control
uses the Gecko layout engine
to deliver a fully programmable HTML
rendering control for ActiveX
developers. The API
is similar to the Internet Explorer
ActiveX control so it maintains a high degree of compatibility.
Mozilla ActiveX Control can be used by ReactOS to gain compatibility with some Windows programs, as well as enable web browsing right from within ReactOS Explorer.
Gecko is the same engine that powers Mozilla, Mozilla Firefox and numerous other rich content applications.