Sidekick by Hubspot - Customer insight integrated with your email tools.
Aircall - Aircall is a call center software of a new generation designed for fast growing companies. Setup instantly and integrates to your CRMs
Outreach - Outreach Is Your Sales Communication Platform
Ameyo - Ameyo is a powerful and highly flexible IP-based contact center software that lets you have a personalized interaction with every customer across multiple channels, thereby driving customer engagement to a level par excellence.
Koncert - Multi-channel sales engagement with personalization at scale.
Five9 - Five9 provides cloud-based call center software for sales, marketing and support.