An application programming interface (API) is a
set of routines, data structures, object classes, and/or protocols provided by
libraries and/or operating system services in order to support the building of
provides various APIs and examples for many programming languages.
The most popular are: the SQL API, the HTTP API, the E-mail API, and
the File API. Software developers often connect to the SMS gateway
using the built in SMPP server.
Example program codes
are available for C#, C++, ASP VB, PHP, Java, and Delphi.