Hello, dbianco! Thanks for the feedback.
Unfortunately, software tags only live in Software accounting tab and are not used outside of it.
We have plans for making software tags omnipresent and smart: apart from filtering software by tags in Table reports, it will be possible to, say, mark a software as an anti-virus in Software accounting to make it show up in Viewer & Reports/Security, etc. These features is part of what we're working on right now.