Sea Containers is not exactly the same thing, but some may find it more useful: https://addons.mozilla.org/en-US/firefox/addon/sea-containers https://addons.moz

Sea Containers is not exactly the same thing, but some may find it more useful: https://addons.mozilla.org/en-US/firefox/addon/sea-containers https://addons.mozilla.org/en-US/firefox/addon/sea-container... It takes advantage of the (relatively) new Containers feature in Firefox.