Datastreamer provides APIs for social media, news, and blogs. Datastreamer provide both this search API as well as firehose (streaming) APIs, and indexes more than 100M posts per day. In terms of raw data they can provide you with 250GB of data per day and have 1PB of archives over 5 years.
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.