The 1.1 version of OptOpt for Mac is available as a free download on our website. This free Mac application was originally created by Jian Hu. Our antivirus scan shows that this Mac download is safe. The application relates to System Tools.
From the developer:
OptOpt lets you switch or launch applications fast and with less key strokes. The default action to bring the switcher is by double-tapping the option key. As a result, the program will display the icons of specific apps in a row, so that you can open the desired application on the spot.
You may want to check out more software for Mac, such as Xcode Statistician or Macintosh Manager, which might be related to OptOpt.