XPCOM is an open-source product of mozilla.org. It is used in the also open-source web browser, Mozilla. XPCOM is a cross-platform (XP) software component technology, similar to Microsoft's COM. It provides for the dynamic loading of software components, it has a layout engine using the XUL XML file format, XPCOM components are scriptable through JavaScript using XPCONNECT, and it has a host of other features.
... Many of these historic splits have been resolved. From the continuing branch churches, some have split in turn. Only some of the continuing branches from the main bodies are ...