Mozilla Firefox now has an experimental feature that lets you log in to a website on the same browser with multiple IDs. This feature is available on the latest version of Firefox Nightly version released a few days ago.
How it works
According to Firefox:
To try this experimental feature, you can download the Nightly version of Firefox here.
How it works
Each container tab share the same history, bookmarks, saved searches, saved form data, permissions and certificates and the sites data are separated. Cookies, browsing cache, indexed DB and local Storage data for each container tab are stored differently.
According to Firefox:
Container Tabs offer better privacy. Although sites may still be able to track you, it will be hard trying to track all container tabs together since the website data are stored differently. Mozilla explains:
To try this experimental feature, you can download the Nightly version of Firefox here.