Highlander is an extension for the Mozilla Firefox browser that allows its users to open only one browser tab for each link. Only one tab for each different URL. Avoid repetitions and unnecessary space occupation in a very simple way.
We can check the utility of Highlander with a very clear example. If at any given time we have many tabs open in our Firefox browser, we may get lost and open a new page that we already have in one of the previous tabs. If this happens, Highlander will automatically take us to the existing tab, instead of opening a new one.
You can free download Highlander 32, 64 bit and safe install the latest trial or new full version for Windows 10 from the official site.