What are some alternatives?
Caffe2 - A New Lightweight, Modular, and Scalable Deep Learning Framework
Bitrix24 - Bitrix24 is a free (for small businesses) social enterprise platform. It is a united work space which handles the many aspects of daily operations and tasks. Create your own social intranet in minutes!
Apollo - Apollo is a full project management and contact tracking application.
Freshcaller - The call center software for startups and small teams. No need to invest in phone hardware for your call center. Product of Freshworks Inc.
RingCentral - RingCentral is the leading provider of cloud-based communications and collaboration solutions for small business and enterprise companies
FluentStream - FluentStream Technologies is an advanced telecommunications company with a core focus on cloud-based applications.