Top 10 UCaaS Leaders In 2016
The Unified Communications-as-a-Service (UCaaS) market is worth $3.9 billion per year, and expected to grow 11 percent annually through 2020.
Interestingly, the top 10 UCaaS providers (ranked by the Research firm IHS based on criteria such as service capabilities and development, financial stability, operational cash flow, growing revenue, market strategy, installed base of seats and support – see list below) account for only 30% (estimate based on available data) of the total market.
| Rank | Company | Annual Revenue (Millions) |
| 10 | Nextiva | 66.2 |
| 9 | Fuze | 14.7 |
| 8 | Broadview Networks | 36.4 |
| 7 | Star2Star | 49.5 |
| 6 | Verizon Enterprise Solutions | UCaaS business unit revenue not available |
| 5 | Mitel | UCaaS business unit revenue not available |
| 4 | Ring Central | 299 |
| 3 | West Corp. | UCaaS business unit revenue not available |
| 2 | Vonage Business | 200 |
| 1 | 8×8 | 209 |