TAOS VM
Despite the hype, it seems that the TAOS VP (virtual processor), as used in the Tao OS is just a proprietary variation on the ANDF idea.Just stay away from it, as well as from other proprietary VM's, all the more when it's so low-level.
Of course, this is written from the little information available about TAOS, so update this if you find more (or come to different conclusions).
This page is linked from: Tao OS