With MetaModel, you use a type-safe SQL-like API for querying any datastore. It is a data access framework providing a common interface for exploration and querying of different types of datastores. It isn't a data mapping framework. Instead, it emphasizes abstraction of metadata and the ability to add data sources at runtime, making MetaModel great for generic data processing applications, but less so for applications modeled around a particular domain.
Raptor is a C library providing a set of parsers and serializers for Resource Description Framework (RDF) triples by parsing syntaxes into RDF triples and serializing triples into a syntax. The parsers support RDF/XML, N-Triples, GRDDL, and Turtle, and via RSS tag soup: XML RSS, Atom 0.3, and Atom 1.0. The serializers support RDF/XML (3 flavours), Turtle, DOT, N-Triples, RSS 1.0, and Atom 1.0. Raptor handles RDF/XML as used by RDF applications such as RSS 1.0, FOAF, DOAP, Dublin Core, and OWL. It can use either expat or libxml2 for XML parsing, libcurl when available for URI retrieval, and is portable to many POSIX systems.
ServingXML is a markup language for expressing XML pipelines and an extensible Java framework for defining the elements of the language. It defines a vocabulary for expressing flat-XML, XML-flat, flat-flat, and XML-XML transformations in pipelines. The accompanying console app supports reading content as XML files, flat files, SQL queries, or SAX events, and writing it as XML, HTML, PDF, or mail attachments. This software is especially suited for converting flat file or database records to XML, with its support for namespaces, variant record types, multi-valued fields, segments and repeating groups, hierarchical grouping of records, and row-by-row validation with XML Schema. There is also an API for embedding the software in a Java application.
Studs MVC Framework+ contains a port of Apache's Jakarta Struts to PHP, though the libraries included in the rest of the project are much more vast. In order to implement the Struts port, it was necessary to build a core, object-oriented API in the style of the JDK and the Jakarta Commons, a servlet container to handle HTTP requests and to invoke servlet classes, and finally, a parsing engine for JSP-style template pages. In the end, the result is an environment which is very similar to that provided by a J2EE Web Container, only everything is implemented in PHP. While it was possible to carry over many of the concepts, designs and mechanisms from J2EE, some limitations do exist due to the nature of the PHP programming language, such as the lack of checked exceptions (runtime only).
WSO2 Web Services Framework for PHP is a PHP extension for providing and consuming Web services. WSO2 WSF/PHP supports SOAP 1.1, SOAP 1.2, WSDL generation, WSDL mode (WSDL 1.1 and WSDL 2.0), REST style invocation, integrated Data Services capabilities, and some of the key WS-* stack specifications such as: SOAP MTOM, WS-Addressing, WS-Security, WS-SecurityPolicy, and WS-ReliableMessaging.
Rome is a set of Atom/RSS Java utilities that make it easy to work in Java with most syndication formats. It accepts all current flavors of RSS (0.90, 0.91, 0.92, 0.93, 0.94, 1.0, and 2.0) and Atom 0.3 feeds. Rome includes a set of parsers and generators for the various flavors of feeds, as well as converters to convert from one format to another. The parsers can give you back Java objects that are either specific for the format you want to work with, or a generic normalized SyndFeed object that lets you work on with the data without bothering about the underlying format.