RoxyApps eBook Conversion Tool - Convert djvu, epub, fb2, lit, azw, lrf and other eBook files to txt, pdf, pdb, rtf and other formats
OpenAudible - OpenAudible Project Page
djvu-pdf.com - Converts PDF to DjVu and DjVu to PDF online.
DRmare Audio Converter - DRmare Audio Converter for Windows is a complete audio DRM removal tool designed to convert both protected audios, including Apple Music, Audible audiobooks, iTunes music, and common audios to MP3, WAC, FLAC, M4A, AAC, etc.
Any eBook Converter - Any eBook Converter is a perfect DRM removal tool for removing DRM from eBook files and convert Kindle, Adobe, Nook, Kobo to DRM-free file, like epub, mobi, pdf, azw, txt and kfx.
TunesKit Audible AA/AAX - Audible AA/AAX Converter by TunesKit is an application that enables you to convert audible AA and AAX files to the formats that are supported by other devices.