New build of ADL Workbench for Mac OS X Mavericks, built with EiffelStudio 13.11. This is functionally exactly the same as the previous build, but the packaging is improved in the following ways. (1) Most of the files are now directly under the openEHR directory rather than being hidden inside the application bundle. This is more like the installation on Windows and Linux, and allows the user to run adlc and access files such as the RM schemas more easily. (2) It is easier for end users to install the Mac OS X version of ADL Workbench by not requiring the user to install MacPorts and its dependencies. When ADL Workbench launches on the Mac, it checks whether MacPorts is installed; if MacPorts is installed, then it uses it. If MacPorts is not installed, however, then it installs Homebrew instead. This is much quicker than installing MacPorts because Homebrew depends on the the Developer Command Line Tools being installed rather than the whole of XCode. Homebrew also builds GTK+ much faster than MacPorts, because it uses dependencies that are already installed by OS X rather than building its own preferred versions of them. In addition to installing Homebrew, it also installs XQuartz if it is not already installed.