Google Apps for your domain
allows domain owners to host email services at Google in a similar format to Gmail, with the added benefit of using their own unique domain. Administrators also have the ability to activate Google Talk, Calendar, custom start page, and domain web pages for different user accounts that they create. Google is expected to soon add Docs & Spreadsheets to this list as well, making it a complete online office solution for businesses. But BusinessWeek
reports that Google will soon begin charging companies a subscription fee of a few dollars per person, per month. Business users are used to feature rich applications, so this might take some getting used to when it's released in full to the marketplace.
Microsoft has also unveiled Office Live
where businesses can have access to web based email, calendar, project and task manager, and a customer organizer for $39.95/month. Zoho has a Virtual Office
suite it has brought to the market that has no cost for individuals and $3 per user per month for an online hosted solution, and up to $295 per year for an on-premise solution consisting of webmail, calendar, web docs and sharing, tasks and reports, contacts, notes, bookmarks, instant messaging, WAP access, announcements, and multi-language support.