Kalimdor.js
A Statistical Machine Learning, written in Javascript, designed for developers and their ease of use. It is a great library to solve various Kaggle challenges and real-life Machine Learning problems. It has a low entry barrier and anyone with beginner level Machine Learning knowledge should be able to pick it up fairly quickly.
I helped my manager to automate sales forecasting agenda using Kalimdor.js and made an easy to use Web & Mobile Interface too