The FaceReader API by Noldus analyzes emotions and allows integration with 3rd party software to respond to the results. Used in the application of surveys, this can be a good application for experiment and research. Using the Project Analysis Module, developers can trigger event markers that launch other applications, or ask their observer questions in response to their emotive triggers. The updated API allows for detailed coordinate and image export.
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.