Web Services Directory

Systinet provides a public UDDI registry for testing and learning purposes.

The Microsoft UDDI Business Registry is an Internet directory of businesses and the applications they have exposed as Web Services for trading partners and customers to use.

XML Web Services portal featuring reviews, ratings, and support. Powered by the public UDDI Business Registry.

IBM pioneered the development of UDDI with Microsoft and Ariba. This is the home site for IBM's UDDI directory of companies and Web Services.

Objects Search's uddi search engine enables users to search registries(webservices).