Now uses the lightweight AAXClean for decryption, replacing the ffmpeg.
Region Support
Supports most regions US, UK, Canada, Germany, France, Australia, Japan, India, and Spain
Search
Powerful advanced search built on the Lucene search engine
Filters
Customizable saved filters for common searches
Import Library
Import your library from Audible, including cover art
Cross-Platform
Fully supported on Windows, Mac, and Linux
PDF Download
Download accompanying PDFs
DRM Removal
Download and remove DRM from all books
Organization
Add tags to books for better organization
Be aware of
File Size: The application has a large file size.
Design: Made by a programmer, not a designer. The goals are function rather than beauty.
Support: This is a single-developer personal passion project. Support, response, updates, enhancements, bug fixes, etc., are as my free time allows.
Updates: I have a full-time job, a life, and a finite attention span. Therefore, a lot of time can potentially go by with no improvements of any kind.
Disclaimer
I've made every good-faith effort to include nothing insecure, malicious, anti-privacy, or destructive. That said: use at your own risk. I made this for myself and I want to share it with the great programming and audible/audiobook communities which have been so generous with their time and help.
Alternatives
Is Libation just not right for you? Similar apps are on AudiobookHub, nearly all of which are also free.