Zoho is a online application that provides numerous services like Word processor , Mail, Online Discussion etc. This is kind of Cloud computng Service where you need to pay for Month/Yearly subscriptions to you use the required service. You can also Try these services for 30 days. However you can get free Application like Chat , Writer, sheet for personal use. you can integrate with other sites like Facebook. It is simple to establish business online and use these Services interact with Customers, Conduct Meeting(webinar), track resources.
You can also use the Hot Google Application which was launced few days ago: