Ottspott - Add a powerful phone platform to G Suite and Slack. Instant set-up, no long term contracts. Secure, global, scalable. Integrates seamlessly with your preferred business apps.
Aircall - Aircall is a call center software of a new generation designed for fast growing companies. Setup instantly and integrates to your CRMs
Yodel - Group photo and video sharing. Create stories with friends, join stories from around the world.
RingDNA - RingDNA is a provider of cloud based inside sales productivity and marketing intelligence software such as call tracking, dialers, and IVR.
OpenPhone - Simplest way to own a business phone number
Dialpad - Switch is a cloud-based phone system built for Google Apps users.