WebMethods, for One, Believes in UDDI " But UDDI doesn’t paint the whole development picture, which Glass believes may partially explain why its adoption has been slow. “In its current version, UDDI is not well suited for metadata about everything. If you’re building an application out of parts, Web services is only one portion.” Others might include portals, portlets, schemas and business processes, among other things.
Glass said WebMethods has been looking at specifications for publishing metadata of other types, such as the W3C’s Resource Definition Framework (RDF). “This looks promising as a way to represent a broader array of metadata than simply that of Web services. And in [the forthcoming] UDDI version 4, there’s a lot of work on leveraging RDF.”"