UverseWiki is a modular open source PHP framework designed for text processing. Unlike most existing solutions, it is not regular expression-based but instead uses a recursive descent parser to build a document object model. After the parsing stage has been finished and the DOM is produced, the original source is discarded and all operations are performed on the document tree instead: nodes can be altered, serialized, or rendered into a particular format (such as HTML or RTF). The wiki syntax is language-neutral and the processing itself is carried out in UTF-8.
elRTE is a WYSIWYG HTML editor for the Web written using jQuery. It features rich text editing, options for changing its appearance and style, insertion and management of various HTML elements with formatting (images, tables, lists, etc.), support for viewing and editing HTML code, and normal and full-screen modes.
PmWiki is a WikiWikiWeb clone that is primarily designed as a tool to support easy, collaborative authoring and maintenance of Web sites. It does not require a relational database such as MySQL. It has advanced template capabilities, page grouping features, password protection for groups and pages, modular plug-in capabilities, and easy-to-customize wiki markup languages and tools.
TEA is a powerful and easy-to-use Qt4-based editor with many useful features for HTML, Docbook, and LaTeX editing. It features a small footprint, a tabbed layout engine, support for multiple encodings, code snippets, templates, customizable hotkeys, an "open at cursor" function for HTML files and images, miscellaneous HTML tools, preview in external browser, string manipulation functions, Morse-code tools, bookmarks, syntax highlighting, and more.
Jaxe is a Java XML editor with a graphical document-oriented interface. It is configurable with an XML schema and a configuration file. It supports validation at element insertion, and is customisable with Java modules. XSL transforms can be used to export documents in XML, HTML, or PDF. Sample configurations include XML schemas, XHTML strict, Docbook, and DITA.