Google revolutionised the way the world uses the internet with its landmark PageRank algorithm. Today, after two decades, Google has grown into an AI powerhouse that generates state-of-the-art algorithms that touch almost every domain known to mankind. As Google turns 21, we have compiled a list of 21 notable contributions from Google which has enriched the machine learning community across the globe. The core open source library to help you develop and train ML models developed by the team at Google Brain. TensorFlow's machine learning platform has a comprehensive, flexible ecosystem of tools, libraries and community resources that lets researchers push the state-of-the-art in ML and developers easily build and deploy ML powered applications.