Perhaps your most important online network of business contacts is now programmable. LinkedIn launched its API (our LinkedIn API profile), which allows developers to access a user's connections and anyone's profile data, in addition to several other features. Though some are saying "finally," it's clearly not too late for LinkedIn, who aims to be the professional networking platform.
Twitter Kit 3 was introduced as a standalone SDK earlier this year. Originally limited to Android and iOS, Twitter has expanded support to Unity. Whether its login authorization, in-game Tweets, or sharing, Twitter Kit for Unity might change the gaming landscape through more social capability.