3CX vs SendHub: What are the differences?
3CX: Your PBX, Your Way: On-premise or in the Cloud. It is an open standards IP PBX that offers complete Unified Communications, out of the box. Suitable for any business size or industry it can accommodate to your every need; from mobility and status to advanced contact center features and more, at a fraction of the cost; SendHub: Get a Free Phone Line in Under a Minute. SendHub is a simple, fast, web and mobile communication tool that provides businesses, and organizations, with a call and messaging solution to reach small and large groups of people.
3CX and SendHub belong to "Phone" category of the tech stack.