KompoZer is based on Gecko, the layout engine inside Mozilla; it's a super-fast, very reliable, standards conformant engine maintained on a daily basis by a wide community of developers. Its remarkable support of XML, CSS and JavaScript offers the best authoring platform on the market. Its architecture based on XUL makes it the most extensible editing tool ever. With KompoZer, all the sites you have specified in your Publishing Settings become browseable in a sidebar. You can get a tree view of a site, la Explorer's folders pane, or a one-dir-only view, la Explorer's directory view. It is also possible to filter files and show all files, or only HTML documents or image files. The browsing area also allows to show for each file its size and the date of last modification. One of Mozill.