I use QupZilla because this is its default configuration (every window is a separate multi-tab [incognito] session). Not so great last time I checked on the Mac but one of my favorites on the PC.<p><a href="https:&#x2F;&#x2F;www.qupzilla.com&#x2F;" rel="nofollow">https:&#x2F;&#x2F;www.qupzilla.com&#x2F;</a>