Formulator is a flexible, extensible framework for the creation and validation of web forms in Zope. Web forms can be created with a web-based management interface. When a form is submitted, many common validations, such as testing for required fields or certain types of input, can be automated.
XPath Methods allows XPath queries on ParsedXML XML documents (and possibly other DOM implementations) in Zope. XPath is a relatively simple but still quite powerful query language used to address portions of XML documents. When you call an XPath Method you will retrieve a set of DOM nodes which you can then display in a Web page using DTML or ZPT, or which you can issue operations upon using, for instance, Python scripts.
Silva is a CMS for organizations that manage multiple or complex Web sites. Content is stored in clean XML, independent of layout and presentation. Features include versioning, a workflow system, an integral visual editor, content reuse, sophisticated access control, multi-site management, extensive import/export facilities, fine-grained templating, and hi-res image storage and manipulation. Silva is built on top of the Zope Web application platform.
lxml is a Python binding for the libxml2 and libxslt XML processing libraries. It aims at ease of use of the API for Python programmers and exposing the many libxml2 features. It implements the Python ElementTree API on top of libxml2. It extends this with support for XPath, XSLT, Relax NG, XML schema, and more.