Lots of useful features, All of which seem to work very well. Being able to bookmark all tabs to the right or the left is really nice, I've been using it to backup pinned tabs for the odd case that firefox doesn't remember them. I'm on Arch Linux XFCE and all is well, the other reviewer on Arch KDE is probably having issues due to KDE so don't let that keep you away if you're a fellow Arch user.