Software as a Service, in which an application is deployed online instead of installed on each computer, isn’t a new concept. But given the shape of the economy, a reminder couldn’t hurt. By letting someone else host your content, you’ll save money on servers, maintenance, troubleshooting, and upgrades. And while traditional desktop apps often have more robust features, Web tools are quickly closing the gap.

To save you cash, we tracked down ten effective business-friendly apps that cost nothing. You can host meetings, send invoices, design a Web site, and much more—all for free.