The KiSSmetrics Ruby SDK by Kissmetrics allows API communication to implement marketing optimization features into applications. It aims to engage users and analyze behaviors for customization purposes. In the usage section, developers can access methods with an Api Key.
PipelineDB announced a developer preview of a new realtime analytics-as-a-service API: Stride. Stride delivers high capacity, realtime analytics through a simple, straightforward API. Users need not invest in costly, cumbersome infrastructure traditionally required for high-end analytics.