( Following list is in random order )
Google Web Search
Gmail
YouTube
Google Calendar
Google Maps
Google Earth
Google News
Google Drive
Google+
Google Translator
Google Books
Google Blogger
Google Shopping
Google Offers
Google Mobile
Google Wallet
Google Reader
Google Photos
Google Videos
Google Finance
Google Play
Android OS
Google Docs
Google Scholar
Google Code
Google Alerts
Google Groups
Google Chrome
Google Glass
Google Toolbar
Google Cloud Print
And there are many more.
Here is the complete list:
http://www.google.co.in/intl/en/about/products/