Unison is the only unified communications system that is both enterprise-grade and available without charge. Unison is like Microsoft or Cisco, in that it provides powerful, full-featured software, but unlike those companies in that it is available free of charge. Unison is also like Google in offering a free, sponsor-supported version, but unlike Google in that Unison runs securely, on-premises:

Here is how Unison compares to some major competitors:
| Microsoft | Cisco | ![]() |
||
|---|---|---|---|---|
| Cost | High $100s per user per year | High $100s per user per year | No charge | No charge |
| Privacy | Good Enterprise-strength | Good Enterprise-strength | Suspect All content hosted and "co-owned" by Google. Web-only access. | Good Runs on-premise, enterprise-strength |
| Complexity | High Hard to deploy and maintain | High Hard to deploy and maintain | Low Simple to deploy | Low Simple to deploy |
| Feature set | Good Advanced features, but poor telephony | Good Advanced features, but poor e-mail and IM | Poor Basic and limited functionality | Very good Advanced telephony, e-mail and IM |
View our Flash demo to see Unison in action. You can also try a demo or download the software. To learn about our zero-cost sponsor-supported license, please see our pricing section.
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