REST: http://rest.blueoxen.net/cgi-bin/wiki.pl?FrontPage

WDDX: http://www.openwddx.org/

XML-RPC: http://www.xml-rpc.com/

Servicios de XML-RPC: http://www.xmlrpc.com/directory/1568/services

SOAP: http://www.w3.org/TR/soap/

SOAP (Cover Pages): http://xml.coverpages.org/soap.html

Servicios de SOAP: http://www.xmethods.com/ve2/index.po

WSDL: http://www.w3.org/TR/wsdl

UDDI: http://www.uddi.org/

XML Schema: http://www.w3.org/XML/Schema

XML Namespaces: http://www.w3.org/TR/REC-xml-names/

PEAR::XML-RPC: http://pear.php.net/package/XML_RPC/

PEAR::SOAP: http://pear.php.net/package/SOAP/

PHP XML-RPC: http://www.php.net/xml-rpc

PHP SOAP: http://www.php.net/soap

Apache WS: http://ws.apache.org/

Perl SOAP-Lite: http://search.cpan.org/search?dist=SOAP-Lite

Python Web Services: http://pywebsvcs.sourceforge.net/