Because much of the heavy lifting needed to run the applications is performed by Zoho's server, not your PC, Zoho can run on low-power PCs and Netbooks that could never handle a full-blown productivity suite. Zoho Office is free for up to 10 users; $19 a month for additional seats.
Since any of these suites can be tried for free, pick one and play with it. If it's just too strange for your Office-conditioned fingers, you haven't lost much. But if it does fit the bill, you've just saved hundreds of dollars.
San Francisco journalist Bill Snyder writes frequently about business and technology. He welcomes your comments and suggestions. Reach him at email@example.com.Follow everything from CIO.com on Twitter @CIOonline.