Dialpad - Switch is a cloud-based phone system built for Google Apps users.
Mobiniti - Mobiniti offers a mobile marketing platform for clients to invite customers to engage with their brand through SMS via their mobile phone.
Nextiva - Business VoIP, cloud phone systems trusted by more than 150,000 companies. Powered by the leading cloud PBX VoIP platform, Nextiva is rated the best business VoIP service provider.
SendHub - Get a business phone system on your smartphone and computer. We provide professional, affordable sms, text, and voice solutions in an easy to use system. 14-day free trial.
3CX - Hosted PBX with CRM integration and mobile apps
CallHub - Predictive Call Center, Voice and Text Broadcasting app