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.
The Aida project is two-fold: it defines a simple common markup language designed to describe structured text, and it implements a compiler that translates the Aida syntax into various target formats (HTML, LaTeX, Trac, Mediawiki, Text, Markdown, and others). The system is fast, flexible, and extensible. The core command, aida, is a strict parser (written using Bison and Flex), which analyzes files written in the Aida Markup Language and invokes callbacks in order to convert them to the target format. It embeds a Tcl language interpreter and the callbacks are written in Tcl. This makes it very easy to extend the library and to define new target formats. Furthermore, the Aida files are highly parameterizable via a header and the entire system is configurable at the admin and at the user level. It is also possible to evaluate Tcl code within an Aida file and thus create dynamic contents.
xsltester is an applet for testing XSL files. It can execute and judge test routines written in XSL templates without another applied XML file. Therefore developers have to create only one testing XSL file for a test. It contains another applet, xslviewer, which can displays an API document for an XSL file. It displays lists of templates (elements), named templates (functions and subroutines), and parameters, and optionally displays test results for each.