Bromium aka HP Sure Click is based on Xen. I’d argue Xen provides comparable security, along with nice to have features such as multi processor support. I work

Bromium aka HP Sure Click is based on Xen. I’d argue Xen provides comparable security, along with nice to have features such as multi processor support. I worked on Bromium, and also coauthored what I believe was the first research paper introducing the idea of a browser OS. See https://homes.cs.washington.edu/~levy/tahoma.pdf https://homes.cs.washington.edu/~levy/tahoma.pdf