Webswell Connect is an e-business integration framework based on the ebXML standard. It allows easy, interactive and user-friendly installation. It consists of an ebXML registry/repository server and client, a messaging system for secure and reliable messaging and user interface similar to popular email clients for sending/handling ebXML messages. It supports HTTP, HTTPS, and email communication while keeping it safe and reliable by implementing digital signatures, encryption, acknowledgment mechanisms, duplication elimination, etc.
4Suite XML is a Python-based toolkit for XML application development. It features a library of integrated tools for XML processing, implementing open technologies such as DOM, SAX, XPath, XSLT, XInclude, XPointer, XLink, XUpdate, RELAX NG, and XML/SGML Catalogs. The RDF and Repository components of 4Suite are separate packages that must be installed separately, on top of 4Suite XML.
Apache XML Graphics Commons is a library that consists of several reusable components used by Apache Batik and Apache FOP. Many of these components can easily be used separately outside the domains of SVG and XSL-FO. You will find components such as a PDF library, an RTF library, Graphics2D implementations that let you generate PDF and PostScript files, and much more.
The XCB library provides an interface to the X Window System protocol, designed to replace the Xlib interface. It has several advantages over Xlib, including size (small library and lower memory footprint), latency hiding (batch several requests and wait for the replies later), direct protocol access (one-to-one mapping between interface and protocol), thread support (access XCB from multiple threads, with no explicit locking), and easy creation of new extensions (automatically generates its interface from machine-parsable XML protocol descriptions). Xlib can also use XCB as a transport layer, allowing software to make requests and receive responses with both, which eases porting to XCB. However, client programs, libraries, and toolkits will gain the most benefit from a native XCB port.
xcb-proto contains descriptions of the X Window System core protocol and selected extensions in an XML-based data format. They are used by the X C Binding (XCB) library to generate much of its code, but you can also use these descriptions for other purposes, such as decoding the X protocol or building X Window System bindings for other languages.