StackEdit is a full-featured, open-source Markdown editor based on PageDown, the Markdown library used by Stack Overflow and the other Stack Exchange sites. Read more new
ogEditor is a Web-based WYSIWYG HTML editor with a built-in file manager. It features a Tag Selector which lets you view and edit a tag's attributes and internal styles while working in the Design view of an HTML page.
XML Configuration File Editor
XML Configuration File Editor (XCFE) is a web service to update the XML configuration file. It allows to set all parameters defined in the CSV configuration files.