TabLang

TabLang is an incredibly helpful Firefox extension for people who constantly switch between different languages while browsing. It lets you set a different keyboard layout for each tab, which is incredibly convenient. No more having to manually switch keyboard layouts every time you visit a different website or tab. With TabLang, everything is automated.

Another neat feature of this add-on is the auto-switching of input locale. Whenever you switch tabs or windows, TabLang automatically changes the system input locale to match the keyboard layout of the corresponding tab. This is something that Firefox does not offer by default, while Internet Explorer does. So if you're switching between different tabs and need a different keyboard layout for each one, TabLang is definitely a must-have tool.

Overall, TabLang is one of the best productivity extensions for Firefox. It's easy to use, efficient, and time-saving. Whether you're a language learner, multilingual, or simply someone who wants to browse the web with ease, TabLang is definitely worth checking out.