3CX is a software-based PBX solution with a cloud hosted option, offering users web conferencing, CRM integration, instant messaging, and native mobile apps.
Microsoft Office is a suite of desktop productivity applications and client and server software designed for data analysis, presentations and numeric manipulations.
VMware vSphere is a concentrates on the architecture, hardware, and software in the standard and enterprise plus editions of vSphere 6, which offers better scale, resilience, and fault tolerance than ever before.