Didn't work anymore. No alternative. :(

Great idea but it seems to be expired 5 years ago (last updated). As it said before - NOT WORKING.

couldn't make the extension work for Jira

This app "works only when it wants to" is the only way to describe my experience. Firefox 69.0.1 6 bit. It's very disappointing to search duckduckgo and have the link open in the same tab unless I go back and select the link again. This is a waste of time. I'm looking for an app that will work every time and will allow options on how tabs should open. BOTTOM LINE: This app isn't as advertised.

not working

Doesn't work with Firefox 63.0.3. New tabs still opened on the far right side.

Didn't work, even when I moved the button for the specified site. Just tooo fiddly. Seems a no-brainer to me that all bookmarks should open in a new tab as standard. Who wants to leave a site you're on to look at another site, maybe for reference. Firefox note. Now I've learned to right click, job done.

Does not work.

Doesn't work at all. I entered 16 specific sites from my list of bookmarks, and this add-on does not open a new tab for any of them. I am, unfortunately, on FF 57.2.