Firefox Containers Preview

Firefox 153 now includes native Containers as a built-in feature, allowing users to keep separate browsing contexts (work, shopping, personal, banking) isolated in the same browser window with separate cookies and ad tracking. This integrates functionality previously available through the Multi-Account Containers extension directly into Firefox, making it visible by default and simplifying workflow management. The preview release lets users create custom containers with names, colors, and icons, though some add-on features are still being developed.