astTECS Call Center Dialer - *astTECS call center dialer is an open source call center solution for outbound & inbound processes. Featuring Predictive dialer, and auto dialer to enhance the performance.
AloTech - Worlds 1st Google Powered Cloud Call Center. CRM/ERP Integrations, CTI, ACD, IVR, DIALER.
EasyCall Cloud - EasyCall is call center system software easy and intuitive, the fully managed cloud solution for inbound and outbound calls of your contact and call center.
Fonvirtual - Virtual PBX, international virtual phone numbers and Call Center software, with WebRTC extensions and agents. The new VoIP phone system. No term contracts.
Aheeva - The Omnibrand, Omnichannel, Omnilocation Contact Center Solution
Five9 - Five9 provides cloud-based call center software for sales, marketing and support.