Download of JustBlog 1.0.8 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 actual developer of this free software for Mac is Wolfgang Schwarz.
The application lies within Communication Tools, more precisely Social & Blogging. 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:
JustBlog allows you to publish posts to one or several WordPress blogs easily and quickly. The application is very simple and only supports plain text and HTML tags. Pictures and other special characters are not supported. Existing posts can not be edited with this tool. JustBlog is only for publishing quick new posts to your blog.
You may want to check out more software for Mac, such as TweetGlide, Bluebird or Facebook for Adobe AIR, which might be similar to JustBlog.