The 0.1 version of RARMounter for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The software lies within System Tools, more precisely File Compression.
The following version: 0.1 is the most frequently downloaded one by the program users. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. This free software for Mac OS X was originally designed by Erik Larsson.
From the developer:
RARMounter is a MacFUSE module that you can use for mounting RAR. It is packaged as a launcher application (RARMounter.app) that you can open your RAR files with, from the Finder (drag and drop to the application icon), or through the launcher's main window.
You may want to check out more software for Mac, such as DataRescueII, UIVI or Batch Unpacker, which might be similar to RARMounter.