Containers are built into any of the versions of Firefox and can be used even without an addon. You just need to turn them on in about:config: privacy.userCont

Containers are built into any of the versions of Firefox and can be used even without an addon. You just need to turn them on in about:config: privacy.userContext.enabled to true privacy.userContext.ui.enabled to true privacy.userContext.longPressBehavior to 2