Google Chart Api

https://developers.google.com/chart/interactive/docs/index?hl=ru-RU
https://google-developers.appspot.com/chart/interactive/docs/drawing_charts
http://code.google.com/apis/ajax/playground/?type=visualization#chartwrapper_with_remote_data
https://developers.google.com/chart/interactive/docs/reference?hl=ru-RU#chartwrapperobject
https://developers.google.com/chart/interactive/docs/examples?hl=ru-RU

https://developers.google.com/google-apps/spreadsheets/#what_can_this_api_do
https://developers.google.com/chart/interactive/docs/datatables_dataviews?hl=en
https://developers.google.com/oauthplayground/?hl=ru-RU
http://code.google.com/apis/ajax/playground/?type=visualization#json_data_table
http://code.google.com/apis/ajax/playground/?type=visualization#simple_visualization
https://developers.google.com/chart/interactive/docs/roles
https://developers.google.com/chart/interactive/docs/reference#google_visualization_data
https://developers.google.com/chart/interactive/docs/reference#GadgetHelper
https://developers.google.com/chart/interactive/docs/reference
https://support.google.com/drive/bin/static.py?hl=ru&topic=25273&page=table.cs&tab=1240295

spreadsheet api
https://developers.google.com/google-apps/spreadsheets/?hl=ru

https://developers.google.com/gdata/samples
http://www.google.com/drive/start/apps.html#fusiontables