Download of Additioner 1.1 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available.
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. This free software for Mac OS X is an intellectual property of Stuart B. Russell. The application is included in Developer Tools.
From the developer:
Additioner is a free utility to manage your scripting additions on Mac OS X. The Additioner enables you to browse, install and remove your Mac OS X scripting additions. It is especially useful when you need to switch between multiple versions of the same scripting addition without deleting any of the versions.
You may want to check out more Mac applications, such as Witango 6, WitangoStudio or MySQLman, which might be related to Additioner.