BackType is a service that lets you find, follow, and share comments from across the web. The BackType API allows you to develop applications that leverage their dataset and interact with their website. The way that BackType works is that when a Web user fills out the Website or URL box in a comment form on someone's blog, BackType assigns it to that person. Then, that commenter has a BackType profile that includes the comments they've posted on the Web.
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.