Vonage's voice over IP (VoIP) roots extend back several decades, so it's no surprise that its Business Communications service has a clear interface and consistently excellent call quality. Its basic video conferencing features work well, too.

Vonage's voice over IP (VoIP) roots extend back several decades, so it's no surprise that its Business Communications service has a clear interface and consistently excellent call quality. Its basic video conferencing features work well, too.