Google Docs has beefed up its integrated with Zoho applications like Zoho CRM, Zoho Mail and Zoho Projects. It is now possible to attach files directly from Google Docs into CRM, Mail and Project apps. It is also possible to upload files directly from Google Docs to Zoho Docs. Even though the latter appears to be a design to lure users out of Google Docs, the integration of Google Docs with the other Zoho products is a clear evidence that Zoho wants their users to use both their own apps and Google's.

Learn more about the integration here: http://blogs.zoho.com/general/zoho-apps-integrate-google-docs