Download of BookNaviger 1.6 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.
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. BookNaviger for Mac is included in Productivity Tools. The actual developer of this free Mac application is Inervo.
From the developer:
BookNaviger allows you to organize your books folder by series and albums and read these books.
You may want to check out more software for Mac, such as CHM Decompiler, Story Tracker or KindleStrip, which might be similar to BookNaviger.