The Web excels at providing fast‐moving information, especially if that information is about Web technology. XML, the extensible markup language that looks set to change many fundamental aspects of networked computing, is a rapidly changing development. Three Web sites are reviewed here that cover most aspects of this emerging technology.
www.xml.com is perhaps the best starting point as it is a site with a wide range of resources and features. The site is packed with explanations not just of a technical nature but also commentary on how XML will be deployed in the future. Particularly useful is the Articles section, which lists by topic area many informative articles which have been published mostly on the Web. The real gem on this site, however, is the annotated XML specification pageset which splits the screen in two and provides a commentary on the W3C recommendations for the use of XML.
www.xml.org is a self‐supporting not‐for‐profit resource whose mission is to provide information on the application of XML in industrial and commercial settings. The site is run by Organization for the Advancement of Structured Information Standards (OASIS) which is at the centre of XML development and as such the news items are most interesting. By far xml.org’s most useful feature is its catalogue, which lists (with links) by industry activity area, organisations that are working on XML specifications. For example aecxml.org is concerned with developing an XML language used to represent information in the architecture, engineering and construction industry. Pieces of information may be resources such as projects, materials, parts, even organisations or they may be processes such as estimating and scheduling. The intention here is to facilitate information exchange. The catalogue allows one to see what XML developments are taking place in a particular industry.
www.xmlpitstop.com is designed for developers and as such has a highly technical feel. Its main strength is its examples section where a variety of working XML applications are available both to view and to download. Be aware that the latest versions of the Microsoft and Netscape browsers are needed to view many examples. If you are one of those who needs to see before believing then this site might prove useful. Pitstop also carries a list of XML tutorials for any visitors to the site who may be interested in learning the language.
