Machine learning is quite a vast field. Its applications can be related to many other areas. Some applications of machine learning are:
Web Search Engine - Google, Apple Safari
Photo Tagging Applications - Google Photos, Picasa
Image Processing - Facial Recognition, Object Detection
Spam Detection - Banking, Finance
Computer Security - Antivirus Protection
Video Surveillance - Real-Time Face Detection
Social Media Services - Facebook, Twitter
Email Spam and Malware Filtering - Gmail
Online Customer Support - Chatbot
Search Engine Result Refining - Redirect links
Product Recommendations - Amazon, Netflix
Online Fraud Detection - Phishing, Credit Card Fraud
Machine learning as a field is largely focused on the task of using data to build a model that can map inputs to a desired set of outputs. Machine learning is growing constantly, as folks imagine new applications for machine learning. Here are some places to read up on machine learning applications, you can take a look at the following:
If you want to know the real-world applications of Machine Learning then you can go through this video: