VMmanager - VMmanager is a QEMU/KVM server virtualization management software, which presents perfect tools for creating virtual machines, providing VPS services, and building cloud infrastructure.
Ansible - Radically simple configuration-management, application deployment, task-execution, and multi-node orchestration engine
SolusVM - Solus Virtual Manager (SolusVM) is a powerful GUI based VPS management system with full OpenVZ...
Chef - Automation for all of your technology. Overcome the complexity and rapidly ship your infrastructure and apps anywhere with automation.
Virtualizor - Virtualizor is a powerful web based VPS Control Panel.
Puppet Enterprise - Get started with Puppet Enterprise, or upgrade or expand.