BotBuilder - The Microsoft Bot Builder SDK is one of three main components of the Microsoft Bot Framework

The Microsoft Bot Framework provides just what you need to build and connect intelligent bots that interact naturally wherever your users are talking, from text/sms to Skype, Slack, Office 365 mail and other popular services.The Microsoft Bot Builder SDK is one of three main components of the Microsoft Bot Framework. It is a powerful, easy-to-use framework that provides a familiar way for .NET and Node.js developers to develop bots.

The Bot Builder SDK provides features that make interactions between bots and users much simpler. Bot Builder also includes an emulator for debugging your bots, as well as a large set of sample bots you can use as building blocks.