Catalina Technology's ctAPI™ web services for Dynamics SL provides an enterprise ready solution for accessing your Dynamics SL back office from any application that can connect to a web service.
This proven web services based API powers our Order Central™ , Sales Central™, Account Central™, and Report Central™ products along with many independent installations to deliver real business every day of the week.
ctAPI™ is the Catalina Technology web services API for Dynamics SL. ctAPI™ allows you to integrate external applications, mobile apps, and other systems to Dynamics SL using SOAP or RESTful API web service calls.
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You can see detailed developers information about the web services here