I found this thread this evening, thought I'd respond quickly. First, the Unitrends Free for VMware (including free/unlicensed ESXi) is here: http://www.unitrends.com/products/enterprise-backup-software/unitrends-free This version protects 1TB - unlimited VMs, retention, etc. It also supports Hyper-V and physical Windows servers and clients. You backup locally and can send backup copies to AWS, Google, and other third-party cloud providers. You can also do instant recovery.
Second, to the question "autumnwalker" asks - as everyone knows, VMware does not allow the use of VADP to do host-level snapshots for free/unlicensed ESXi. So we support host-level protection if you had "paid" (or licensed) VMware vSphere - and we support agent-based protection if you're using free. Since we offer instant recovery for VMware and Windows, you can do instant recovery in both the paid/licensed version of VMware vSphere and in the free/unlicensed version of VMware vSphere.