You can download CleanLogOut 2.0.1 for Mac from our application library for free. The program is included in System Tools. The actual developer of this free Mac application is Victor Andreoni.
From the developer:
Yet another application with the same goal as CleanShutDown and CleanReboot: provide a one-click solution to log out from your account without saving application’s state.
Go into System Preferences -> Personal -> Universal Access -> Check box at bottom for “Enable Access for Enabled Devices”.
You may want to check out more software for Mac, such as Xcode Statistician or Macintosh Manager, which might be similar to CleanLogOut.