From their site: ArcWeb Services is a no-cost Web services mapping API that is available to Web developers wishing to access ArcWeb Services. Commercial Services functionality for personal, noncommercial, and nongovernmental development projects. Public Services is offered through a one-year subscription that provides almost all of the same API functionality of Commercial Services however, it only makes available a subset of the mapping data. Public Services provides personal interest Web developers with SOAP, REST, OpenLS, and mobile mapping APIs for integrating mapping and GIS functionality into Web-based applications.
The following is a list of SDKs from our SDK directory that matched your search term. Though your definition of an SDK may differ, in our world, we define SDKs as platform- specific tools for consuming existing APIs of the sort we list in our API directory. For example, the Ruby SDK for consuming the Twitter Ads API. If you think an SDK, API, or other asset is missing from our directory, be sure to check our guidelines for making contributions to ProgrammableWeb.