.VMSD file extension

This is the basic program to work with .VMSD extension

VMware Workstation

VMware Workstation VMware snapshot metadata

VMware Workstation allows you to run multiple operating systems as virtual machines (VMs) on your Windows PC. It is useful for IT professionals and developers who build and test software for multiple platforms. You can run Windows, Linux, and other operating systems simultaneously... (more)

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