Libxml2 is the XML C library developed for the Gnome project. The library code is portable (to Linux, Unix, Windows, embedded systems, etc.) and modular; most of the extensions can be compiled out. Libxml2 implements a number of existing standards related to markup languages, including the XML standard, Namespaces in XML, XML Base, Relax NG, RFC 2396, XPath, XPointer, HTML4, XInclude, SGML Catalogs, and XML Catalogs. In most cases, libxml tries to implement the specifications in a relatively strict way. To some extent, it provides support for the following specifications, but doesn't claim to implement them: DOM, FTP client, HTTP client, and SAX2. Support for W3C XML Schemas is in progress. It includes xmllint, a command line XML validator.
The SeaMonkey project is a community effort to develop an all-in-one Internet application suite. It contains an Internet browser, email and newsgroup client with an included Web feed reader, HTML editor, IRC chat, and Web development tools, and is sure to appeal to advanced users, Web developers, and corporate users. It uses much of the Mozilla source code powering such successful siblings as Firefox, Thunderbird, Camino, Sunbird, and Miro.
t2t can convert any delimited text file to an HTML table. It supports all attributes for the various table-related tags. It can read its input either from stdin, a file, or a whole directory. when t2t is passed in a directory, it will process all the files (except those with either .html or .htm extension), and all the files in all the sub-directories. It works on any system with Perl.
XMLDB uses an RDBMS to persist arbitrary XML documents. Due to its storage mechanism, searching for and recalling documents is extremely quick. You can also perform XSL translation on documents with surprising speed. The library can be used in any program to store libxml2 documents. A PHP module is also included, making XMLDB into a complete three-tier Web application development suite.
phpHtmlLib is an application development framework for developing OOP style Web applications in PHP. The application framework supports an MVC style architecture and Ajaxable and Cacheable interfaces for developing rich client Web applications. It comtains a set of PHP classes and library functions to help facilitate building, debugging, and rendering of XML, HTML, XHTML, WAP/WML Documents, and SVG (Scalable Vector Graphics) images as well as complex HTML widgets.
The Styler Ant Task makes useful combinations of XSLT and other transformations easy to specify in an Ant build file. Styler can handle multiple transformations, in parallel or pipelined, split or merge files, process non-XML files such as HTML (based on JTidy), apply non-XSLT transformation, such as "regular fragmentations" and use any custom XMLReader or XMLFilter class to handle new file formats and transformation techniques.