Jump between Tabs in Firefox with Keyboard Shortcuts

Go to specific tab with text by extension "Tabhunter"

Setup the invoking key in its preference page. I use F1 as the key. Every time F1 is pressed, input some text to activate the corresponding tab. Current version (2015/03/27) is 1.0.5.

Jump betwwen tabs with ctrl+tab

In a new tab, type about:config in the address bar and press Enter. Click the button promising to be careful. Set browser.ctrlTab.previews to true; Now use ctrl+tab to jump between two tabs;

Or use extension "Ctrl-Tab" to achieve the same functionality.

Jump between tab groups with ctrl+`

Create and manage tab groups with ctrl+shift+e (see Use Tab Groups to organize a lot of tabs for details). And use ctrl+` to jump between two tab groups.