5 Web services that are available today.

WMS Acquisitions API - A read-write Web service for the Acquisitions module of OCLC WorldShare Management Services so library staff can create, update, delete and submit orders and get invoices for materials they’d like to acquire. Provides developer-level access to order, invoice, budget and funding data. XML and HTTP - Are the foundation for calling web services with Web Services Link. A user interacts with the web service interfaces by sending XML messages over HTTP. XML and HTTP are useful for creating and sending messages because they are flexible and widely supported on many platforms and languages. WebserviceX.NET - provides programmable business logic components and standing data that serve as "black boxes " to provide access to functionality and data via web services. Tagthe.net - This API reads your text (English or German) and makes suggestions for meaningful tags for that content. Good tagging of your content will result in better visibility and utility on social networking sites. ZipCodes - Find near-by zip codes, distance between zip codes, coordinates of zip codes; also supports user-defined places. ZipCodes service contains functionality to search for near-by zip codes within a specified distance. The service also supports user-defined places. You can upload a list of your locations and perform searches on them similarly to zip codes and cities.