Almost Rated 4 out of 5 stars

I've been using Snap Links (Plus) ever since I could remember, but because the latest version doesn't get along with Tree Style Tab I've switched to Multi Links since it has proper support.

This add-on is virtually identical to Snap Links Plus except for one major flaw - you can't drag the box if you right-click directly on a link; you have to start off NEAR the link, which means you have to use an extra bit of precision which is a hassle if you're opening as many new tabs as me.

This user has a previous review of this add-on.