Google offers so many user friendly applications for the help of users. I am describing some here just for spreading this knowledge to others. Google offers a total package of tools completely free.
Google Chrome Web Browser– offers fast, safer and easiest browsing with address bar search.
Google Earth– allows you to find all the things situated on earth including maps, hotels, roads and more.
Google Apps– provides whole family pack like Google email, calendar, and document applications with facility of creating, collaborating, communicating and sharing with everyone.
Google Toolbar for Internet Explorer– offers you to search from all web pages and auto fill forms also blocks pop-ups.
Spyware Doctor with Anti-Virus– protects your PC from viruses and detects all kind of virus infected files.
Google Desktop– offers you to easily find and manage all emails, files web history at one place on your desktop sidebar.
Picasa– offers to easily find, edit and share your favorite photos with red eye and fix photo removal.
Adobe Reader– offers to view, print and search pdf files easily.
Mozilla Firefox with Google Toolbar- offers quick browsing and tab facility in your internet browser.
Google Talk- offers to connect with your friends with text or voice chat easily.
RealPlayer– offers to play popular audio and video with well organized manner.
Skype– allows you to call mobile and landline in minimum cost.
There are many more google apps used you can take a look of above ones.