From their site: QuarkRank provides the information for making decisions at the point of purchase. QuarkRank has the capability to automatically summarize the opinions of millions of consumer reviews on the internet. It provides summarized opinions via API and Widget.
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.