Maybe I've been living in a cave (feels like it sometimes), but I don't think I've heard of IFS before.

Lotsa differnet schemes now - Spektum, XPS, FASST, IFS, ...

Has any independent person / org done a comparison review of each of these technologies ? I'd like to see a good explanation of the different approaches and different capabilities offered by each, but without that being slanted by some company's own commercial interests.

Gordon