Easyrec is an open source recommender system that can be integrated into a website via a REST API. Developers can download the software to install on their own servers, or use a hosted version. The API exposes functionality such as viewing, buying and rating items, viewing recommendations and rankings. Responses are formatted in XML and JSON.
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.