Google Sync for your phone (not only android); all of google applications for phones

Visit m.google.com to see what's available specifically for your phone make and model.

http://www.google.com/mobile/

applications:
http://www.google.com/mobile/more/
Many Google applications work on phones. Product availability varies by phone and region.

sync:
http://www.google.com/mobile/sync/
Keep your Gmail, Calendar and Contacts in sync.
On most devices, Google Sync uses the Microsoft® Exchange ActiveSync® protocol. When setting up a new Exchange ActiveSync account on your device, existing data may be removed from your phone.

----------list of applications:

Google Search app Watch video
Download Google Search app to your smartphone to search fast.
Google Search
Search Google from your phone, and never say “I don't know” again.
Google Maps Watch video
Never carry a paper map again.
Gmail Watch video
Get your email wherever you are.
YouTube Watch video
Millions of videos right in your pocket.
Google Voice Watch video
Have one phone number for life.
Google Sync Watch video
Keep your Gmail, Calendar and Contacts in sync.
Google Latitude Watch video
See your friends on a map.
iGoogle Watch video
Get your personalized content anywhere, any time.
Buzz Watch video
See what's going on nearby and post a message tagged with your location.
Google Earth Watch video
Explore the world from the palm of your hand.
Google Maps Navigation
Find your way wherever you are.
Google Goggles Watch video
Use pictures to search the web.
Google Goggles Watch video
Use pictures to search the web.
Google Docs Watch video
View and edit your documents and spreadsheets from anywhere and at any time.
Google Books Watch video
Take millions of books with you on the go.
Blogger
Keep your readers posted wherever you are.
Google SMS
Search by text message. Text 'help' to GOOGLE (466453) to use.
Google Translate
Translate text in more than 50 languages and speech in 15 languages.
Picasa Web Albums
View and share the photos in your Picasa account.
Google Reader
Keep up with your favorite blogs and newsfeeds, and share content with your friends. Star items you want to read later.
Google News
Read and search for the latest news from anywhere, at anytime.
Google Calendar
No syncing necessary. Set up mobile phone notifications.
Google Tasks Watch video
Stay on top of your to do list with Google Tasks for mobile.
Google Talk
Stay connected to your Google Talk contacts right from your phone.