Brackets editor by Adobe. OK, I assume they purchased it, but it’s under their brand. Link:
After download on the Mac, if on Maverick, it will prevent you from running it. Instead of using Alfred or Spotlight, try instead:
2) Install in apps (click the dmg from the step above)
3) Go to apps, find brackets.app, and hold CTL while you click it. This should bring up the option to “Open” as well. Do that.