Yes. Looked for the portable apps version of Google Chrome. Unfortunately it does not guarantee that it doesn't add anything permanent to my machine.

Except, perhaps, for the Renderosity site, Firefox works just fine. I don't want to muck up my machine adding a browser I would only use for Renderosity. Sorry. I am surprised that others don't have the same issues, though, as I don't think I'm doing anything special or unusual, and I don't think I'm being overly sensitive. It's just that nothing really fits;It's hard to view vendor products as the site seems oriented to a vertical format and all my screens are horizontal. It has been this way over a year now, that's why I thought it might be a business case.