WeChat API helps developers to integrate chat services into an application. WeChat iOS SDK is available to download at no cost. We Chat helps users to find interesting content, use a share button, choose friends, and redirect users to an app. While WeChat Moments follow the same structure, the users' app sends content to WeChat servers. Installation guide available.
Being, an iOS app that allows users to browser Instagram as someone else, has had its access to the Instagram API cut off. In the first week following its launch, Being reached the Best New Apps section of the App Store's front page and was used to view more than 500,000 Instagram feeds.
About a year after Google introduced the Hangouts Chat API, it is enhancing the ability to build chatbots by supporting both Dialogflow and Hubot. Dialogflow allows developers to leverage natural language processing to train bots. Hubot allows developers to build bots for multiple platforms.