You can look at this extension to see if you can use this extension:

• Tab Wheel Scroll: https://addons.mozilla.org/firefox/addon/tab-wheel-scroll/

Thank you, this is a useful extension, but not exactly what I need.

I'm not aware of an extension that supports this feature to use the horizontal mouse scroll wheel to switch between tabs. That is why I proposed the extension.

You would need to have the 'button' to emulate these commands:

• gBrowser.mTabContainer.advanceSelectedTab(-1,true);
• gBrowser.mTabContainer.advanceSelectedTab(1,true);

Yes, I believe, this is the right way of solving my issue.

But actually I have no idea how to send commands to my browser. May be you can give me some example? Thank you in advance!

Otherwise I can mark this question as solved and create another question about sending the commands.

Hi there. I don't know of any way to do this natively in Firefox, but Firegestures, https://addons.mozilla.org/en-GB/firefox/addon/firegestures/, supports wheel gestures, rocker gestures, and tab gestures with the wheel. You could see if one of these suits you.

Use the Advanced tab: http://www.xuldev.org/firegestures/images/options3.png?ver=1.7.

Thank you, Phoxuponyou! I have tried to use firegestures, but I couldn't find a gesture, which corresponds to the horizontal scroll wheel of my mouse.

May be you can advise me, how to find this gesture?

Apparently FireGestures does not support horizontal scrolling directly if you can't get it to work. I have no local means of testing it, as no one I know owns a mouse with horizontal scrolling. FireGestures does provide alternatives (I use tab row scrolling), however, and supports scripting if you want to try and use the technical information provided by cor-el.

One more avenue would be to use the mouse's own software like Logitech Setpoint or Microsoft Intellipoint to set the horizontal scrolling to execute the FF hotkey combo Ctrl+PgUp and Ctrl+PgDown. This would override native scrolling, however.

You can leave feedback at https://input.mozilla.org/en-GB/feedback/ if you'd like to see this functionality implemented. I think you're better off trying to get an add-on to do it though, as horizontal scrolling seems to remain a very niche feature.

Thank you once more!

I will do both: leave a feedback and try to solve my issue by making a script in my OS (Ubuntu).

Alright; you're welcome, and the best of luck in your quest!