There are many popular, and free, on-line "Google Services" and data storage facilities.
These are automatically available to users after registering for their Google Account.
Some of the features can be integrated into a browser, a screen widget, or an App {Application}.
Users typically download Apps to mobile device(s) from Google's Play Store or other locations. Once installed the Apps will automatically synchronise data across device(s) and web based services for the Google Account.
Visit the official Google web pages for a full and up to date list of the services they provide.
Visit Wikipedia for a comprehensive collection of 'everything Google' to give you more insight.
N.B. You can always use a search engine, like Google, for the latest information on topics that interest you.