Google Contacts is a web-based address book and falls under the category of contact management software.  

  Google My Business is a free tool provided by Google that allows businesses to manage their online presence on Google, including their business information...

  Google Calendar is an online calendar that allows users to easily keep track of their events and schedules on various devices.  

Google Analytics is a free web analytics service provided by Google that tracks and reports website traffic, providing valuable insights for website owners.