The FamilySearch C# SDK by FamilySearch communicates with the API via NuGet. It provides usage and example available at https://github.com/FamilySearch/gedcomx-csharp/tree/master/FamilySearch.Api#examples
Google has announced the launch of a new Indexing API that publishers can use to notify Google when job posting pages on their sites have been updated. According to Google, the use of the API "allows Google to schedule job postings for a fresh crawl, which can lead to higher quality user traffic."
Google has open sourced its Cloud Search Connector SDK. The goal is to ease the search of third-party content and identities within a company. Google originally partnered with around 50 partners around the world to build third-party connectivity for Cloud Search and has now opened up a public SDK.
This past Valentine's Day, DuckDuckGo announced via Twitter that their search engine had "received over 1,000,000 direct searches yesterday for the first time ever!" A major accomplishment for a search engine that is essentially unknown. And this search engine has an API.