.OVA file extension

This is the basic program to work with .OVA extension

VMware Workstation

VMware WorkstationOpen Virtualization Format Distribution Package

VMware Workstation allows you to run multiple operating systems as virtual machines on a single PC. You can replicate server, desktop and tablet environments on a virtual machine, to run applications simultaneously across operating systems without rebooting... (more)

The program works with the following extensions: vmt, vmx, ova, ovf, vmc, xvm, vmdk, sv2i, vmsn, vmac, conf, vmba, vmhr, vmtm, vmxa, vmpl, vmsd, vmxf, nvram and vmlog

.OVA extension is also supported by the following programs:

VMware Workstation Player

VMware Workstation PlayerOpen Virtualization Format Distribution Package

VMware Player Pro is a streamlined desktop virtualization program.
Web Studio

Web StudioWeb Studio Web Page

Web Studio is an easy to learn web design program.