Can each Firefox tab have its own keyboard layout / language?

Solution 1:

Please have a look at TabLang.

Allows you to keep separate keyboard layout for each tab and automatically changes system input locale when switching between tabs or windows - the feature Firefox lacks in comparison with Internet Explorer.

Features:

• Changing keyboard layout when switching between tabs/windows (including sidebars)
• Configurable default keyboard layout for new tabs/windows
• Opening link in new tab/window preserves keyboard layout
• Preserving independent keyboard layout for address bar globally or on pre-tab basis
• Preserving independent keyboard layout for web search bar and page find bar
• Session restore support
• Undo close tab, tab drag-n-drop and tear-off support
• Panorama (tab grouping) support