, : -- -- Xen : 15 OpenVZ, KVM Xen 12, 2020 100 0 0 7 Xen CentOS 26, 2020 90 0 0 7 Citrix Xenserver Hypervisor Vmware vSphere 2, 2020 10 0 0 6 Cisco Unified Communications Manager 01, 2016 3280 30 1 6 CentOS Samba 15, 2017 1940 0 0 3 Proxmox: 15, 2018 3520 10 1 4 -: 06, 2018 120 20 0 4 Kamailio Ubuntu 27, 2018 1430 90 1 5 Docker Swarm 09, 2019 1960 10 0 8 pfSense Ubuntu CentOS 22, 2020 430 10 0 7 1 2
