Bean is a rich text editor with many niceties added to make writing convenient, efficient, and comfortable. It is, to use a horrible cliché, Text Edit on steroids. It uses Apple's NSText object to do most of what it does, but adds live word count, the ability to adjust printed margins, and lots of other bells and whistles.
EditiX is a cross-platform and multi-purpose XML editor and XSLT debugger (1.0 and 2.0), which helps Web authors and programmers use XML and XML-related technologies, such as XSLT, FO, and XSD schemas. It provides a lot of functionality within a refined IDE, which guides the user with intelligent entry helpers, and has real-time XPath location and syntax error detection. It allows the user to apply an XSLT or FO transformation, and shows the result in a separate view. It includes default templates for XML, DTD, XHTML, XSLT, XSD, XML RelaxNG, SVG, MathML, and XML FO. It can generate schema W3C, DTD or RelaxNG from a document instance.
AldoContent is a lightweight CMS focused on usability and simplicity. It is designed for multilingual Web sites and can have sections with public and private content. It has file management, is extensible with plugins, and uses gettext for localization. Is written in PHP for a MySQL backend.
HTML::GenToc allows you to specify significant elements that will be hyperlinked to in a Table of Contents (ToC) for a given set of HTML documents. Also, it does not require said documents to be strict HTML; this makes it suitable for using with templates, included files, and meta-languages such as WML or PHP.