You get 1 alternate session w/ Incognito or Private Browsing modes. Internet Explorer has File | New Session. Otherwise, it's down to extensions: https://addon

You get 1 alternate session w/ Incognito or Private Browsing modes. Internet Explorer has File | New Session. Otherwise, it's down to extensions: https://addons.mozilla.org/en-us/firefox/addon/multifox/ https://addons.mozilla.org/en-us/firefox/addon/multifox/ https://chrome.google.com/webstore/detail/multilogin/nccllfnllopfpcbjdgjdlfmomnfgnnbk?hl=en https://chrome.google.com/webstore/detail/multilogin/nccllfn...