• Firefox Nightly 131 introduces vertical tabs and an improved sidebar, enhancing tab management and multitasking for users with many open tabs.
  • The vertical tabs feature, similar to Microsoft Edge, keeps tabs organized on the left-hand side and can be customized via Firefox Labs settings.
  • Additional features include AI chatbot integration in the sidebar and ongoing development of tab grouping and profile management tools.
  • Rather than replace, I’d guess it could be an alternative. The best part of it will be the ability to natively disable the top tab bar instead of needing a janky userchrome css hack that doesn’t even fully work.