[beardog]

I use xpra to run apps in VMS but seamlessly render them on my desktop. Allows me to have a qubes type workflow without using qubes. Probably not quite as secure, but you can disable features for untrusted servers.

[fb03]

Quick question: Why would you need Xpra for this, or what are the advantages of Xpra over normal X forwarding?

[kragen]

x can't run untrusted applications; it trusts everything

any x application can spy on everything you're doing in other windows, send them messages, inject other windows into them, delete them, and post ui events to them. basically with very few exceptions any x application has total control over your account

xpra has other benefits (lower network bandwidth usage, being able to reconnect after network outages, being able to move an app from one display device to another) but that's not what the grandparent comment is talking about

[kragen]

i assume you mean 'in virtual machines' rather than 'in the digital operating system almost, but not quite, entirely unlike unix'?