Thanks to Berenger
http://beranger.org/index.php?page=d...hrome-chromium
I have discovered Chromium
http://build.chromium.org/buildbot/s...rome-win32.zip
now this is very interesting, it does not install itself as an app and is launched directly from the chrome.exe so has a tiny footprint. As with Chrome, each tab runs in its own separate process.

This is the version that I shall be using.