WeChat SDK by Zem is a third party kit that can help developers to integrate chat, messaging, video, and voice features into an app. This SDK works with PHP language. Particularly, WeChatClient assists to identify chat menu, manage groups, upload and download media files, and send server messages.
Facebook this week introduced two major sets of developer tools for interacting with its various services. The company released a new software development kit for Apple's Swift programming language, and added lots of new features to its Graph API 2.7. Both toolsets are available in preview form.