This list of 11 secret Firefox tips is fantastic! Number 2 will change your life! OK, that’s overselling it a lot. Many of those I already knew, but the second tip really is great:
Search for a needle in a tabstack
Tab hoarders, we see you. Heck, we are you. Don’t ever let anyone shame you for having dozens (and dozens3) of open tabs, implying you don’t have it together and can’t find the right one. Instead, dazzle them with this trick. Add a % sign to your URL search bar to search specifically through all your open tabs, including tabs in different windows. Then you can click over to the already open tab instead of creating a duplicate, not that anyone has ever done that.
Bonus tip: If you love that tab search trick, try searching through your Bookmarks with * or your History with ^.
I’ve (somewhat) cut down on my tab hoarding thanks to One Tab and Pinboard, but my Firefox history is massive. Being able to search my history with ^ is a game-changer for me. I’m actively trying to build up my muscle memory for using that search operator.