Mozilla is developing a feature (currently) called Containers that allows you to easily maintain different cookie jars (work, personal, shopping, etc) per tab.

Mozilla is developing a feature (currently) called Containers that allows you to easily maintain different cookie jars (work, personal, shopping, etc) per tab. I have multiple Google accounts and this Container feature is the only way I can use the effectively in the same browser session. :) You can install the Containers experiment extension here: https://testpilot.firefox.com/experiments/containers https://testpilot.firefox.com/experiments/containers