Zoiper - Cross-platform VoIP softphone dialer for SIP and IAX systems
NICE inContact - Get the DMG Consulting report reprint on cloud contact centers.
XO Hosted PBX - Hosted PBX is a scalable UC solution that uses cloud technology to integrate HD voice & data services, mobility, along with advanced calling
Five9 - Five9 provides cloud-based call center software for sales, marketing and support.
Sipdroid - Free and open-source SIP/VoIP Client
Genesys PureConnect - The Genesys PureConnect platform is an all-in-one customer experience solution that’s easy to use, flexible and customizable to your business needs.