Google AdSense :

https://www.google.com/adsense/

Google AdWords:

https://adwords.google.com/select/

Google Analytics:

http://google.com/analytics/

Google Answers:

http://answers.google.com/

Google Base :

http://base.google.com/

Google Blog Search :

http://blogsearch.google.com/

Google Bookmarks :

http://www.google.com/bookmarks

Google Books Search:

http://books.google.com/

Google Calendar:

http://google.com/calendar/

Google Catalogs :

http://catalogs.google.com/

Google Code :

http://code.google.com/

Google Deskbar :

http://deskbar.google.com/

Google Desktop :

http://desktop.google.com/

Google Directory:

http://www.google.com/dirhp

Google Earth :

http://earth.google.com/

Google Finance :

http://finance.google.com/

Google Groups :

http://groups.google.com/

Google Images :

http://images.google.com/

Google Labs:

http://labs.google.com/

Google Local:

http://local.google.com/

Google Maps :

http://maps.google.com/

Google Mars :

http://www.google.com/mars/

Google Mobile:

http://mobile.google.com/

Google Moon :

http://moon.google.com/

Google Movies:

http://www.google.com/movies

Google Music:

http://www.google.com/musicsearch

Google News :

http://news.google.com/

Google Pack:

http://pack.google.com/

Google Page Creator:

http://pages.google.com/

Google Personalized Home :

http://www.google.com/ig

Google Personalized Search:

http://labs.google.com/personalized

Google Reader :

http://www.google.com/reader

Google Scholar:

http://scholar.google.com/

Google Docs:It is web based word Processor and a spreadsheet. It is free for Use.