1.[Bot Framework](https://dev.botframework.com/) Build and connect intelligent bots to interact with your users naturally wherever they are, from text/sms to Skype, Slack, Office 365 mail and other popular services. from Microsoft
Why
My Story
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My daily life/work depends on too much chat on wechat.
* I almost have 14,000 wechat friends till May 2014, before wechat restricts a total number of friends to 5,000.