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.

How does web service affect the evolution of TECHNOLOGY ?

Web services allow different applications from different sources to communicate with each other without time-consuming custom coding, and because all communication is in XML, Web services are not tied to any one operating system or programming language. For example, Java can talk with Perl, Windows applications can talk with UNIX applications. Web Services can convert any application into a Web-application, which can publish its function or message to the rest of the world. Web service has great contribution of the technology nowadays since many of us uses different software or programs in our different work stations and even gadgets. By the use of web service there's no problem between different platforms to communicate with each other.