Proxmox can be used as an alternative to a VMware ESXi hypervisor and VMware’s virtualization solution called vSphere. There are multiple factors to consider when selecting the right solution to run virtual machines. The Proxmox vs VMware vSphere comparison can help you choose the optimal solution for your organization, taking into account your requirements, infrastructure and budget: https://www.nakivo.com/blog/proxmox-vs-esxi/