Qubes is a Xen-based virtualization thing, it has nothing to do with tor by itself, you can think of it as a replacement to qemu or virtualbox (but not exactly). Qubes has official support for both Whonix and Tails.

It looks like whonix is what you are looking for, from wikipedia:

> Unlike Tails, Whonix is not "amnesic"; both the Gateway and the Workstation retain their past state across reboots