I have a need to use Firefox with multiple independent sessions, due to some websites with problematic path-dependent navigation. Firefox's "Private Browsing" option seems to allow multiple windows and tabs, but they are all tied to the same session. In the current configuration, there seems to be exactly one session for all of the non-private windows and tabs, and exactly one other session for all of the private windows and tabs. This is a problem because sometimes I need a variety of windows each with a different session, and don't want to be limited to only two of them.
As an example, some airline reservation websites make it very difficult to independently browse and navigate different flight-booking searches in different windows, because the site uses cookies in a way that causes the navigation in one window to corrupt that in another window.
Are there any options in Firefox or add-ons to support this?
Best Answer
There is an add-on called MultiFox that does this.
OR, use the -no-remote command line switch to open another Firefox instance with its own profile if you want to run different Firefox versions simultaneously; you'll have to combine it with the -P switch specifying the alternate profile.