The Meetup Node.js SDK by Meetup and collaborator Juan Pablo Kutianski allows to access community features that aim to extend invitations in social media applications. Examples available on GitHub present events, RSVP, groups, and photos. Additional samples at https://github.com/jkutianski/meetup-api/tree/master/examples
Roughly a year and a half after Unsplash began opening its API to third parties, the company has opened the floodgates to its API. The company boldly opened up the API that the photo community Web app currently runs on. Further, API access is totally unrestricted and completely free.
Jinni, television and movie taste engine, has expanded its API to include a feature that discovers movies and shows that more than one viewer will enjoy: Watch Together. The Watch Together feature expands the discovery engine API to include social functionality (e.g. makes recommendations based on the tastes of multiple, disparate tastes). Based on multiple profiles of a group that would like to watch a show together, Watch Together makes a recommendation.