There are many alternatives to Optimal Layout for Mac and since it's discontinued a lot of people are looking for a replacement. The best Mac alternative is BetterTouchTool. It's not free, so if you're looking for a free alternative, you could try Amethyst or Shiftit. If that doesn't suit you, our users have ranked more than 50 alternatives to Optimal Layout and many of them are available for Mac so hopefully you can find a suitable replacement. Other interesting Mac alternatives to Optimal Layout are Divvy, Moom, HyperDock and yabai.