Ruddi
- Java-based UDDI library allowing seamless access to UDDI V3, V2 and V1 registries. By INSPIRE IT. [Commercial, Open source, Reciprocal Public License]
- http://www.ruddi.org/

MSDN UDDI
- UDDI overview, MS UDDI SDK documentation, technical articles, and downloads.
- http://msdn.microsoft.com/library/default.asp?url=/nhp/Default.asp?contentid=28001204

The XML Cover Pages: UDDI
- Provides description and references for UDDI. By Robin Cover.
- http://www.oasis-open.org/cover/uddi.html

UDDI Reference
- Documentation for the UDDI version 1 and version 2. Also contains cross-reference to the WASP UDDI implementation from IDOOX. By ZVON.org.
- http://www.zvon.org/xxl/uddiReference/Output/

UDDI.org
- A industry initiative to create a platform-independent, open framework for describing services, discovering businesses, and integrating business services using the Internet, as well as an operational registry that is available today.
- http://www.uddi.org/