BlogScript X 1.6 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The application is included in System Tools. We recommend checking the downloaded files with any free antivirus.
From the developer:
BlogScript is an AppleScript that was designed to function on Mac OS X v10.1. BlogScript uses the built in XML-RPC power of X.1 and it's new Toolbar Script feature. BlogScript's main purpose is to allow users of Blogger.com's weblog and news site management system to post directly from a users desktop, or from anywhere for that matter.