Packer is a tool for creating identical machine images for multiple platforms from a single source configuration.
This is a Vagrant 1.1+ plugin that adds a KVM provider to Vagrant, allowing Vagrant to control and provision KVM/QEMU VM.
This is a Vagrant 1.1+ plugin that adds an Libvirt provider to Vagrant, allowing Vagrant to control and provision machines via Libvirt toolkit.
VeeWee: the tool to easily build vagrant base boxes or kvm,virtualbox and fusion images