Download of JoyKeyMapper 1.2.0 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The application lies within System Tools, more precisely Device Assistants. The actual developer of this free software for Mac is Yuki Ohno. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software.
From the developer:
JoyKeyMapper allows you to use your game controller as a keyboard or mouse. You have the ability to set different key mappings for each application. You can also check the battery level of your controller. The tool notifies you of controller battery level changes.
You may want to check out more software for Mac, such as ImTOO iPhone Transfer, Fire or DSLRRemotePro, which might be related to JoyKeyMapper.