Create audiobooks with chapter marks in M4B format with 'Chapter and Verse' - Freewaregenius.com
Portable AudioBookConverter 6.1.2 Free Download for Windows
M4B to MP3: 5 Best Ways to Convert M4B Audiobooks to MP3
GitHub - TheMetalCenter/m4b-mp3-chapters-from-cuesheets: merge audiobooks or podcasts without re-encoding (remuxing only) to single m4b with quicktime/nero chapters or mp3 with id3v2 chapters using cuesheets; also allows for renaming/editing chapters
Best 2 Ways to Make an Audiobook (AAC/M4B) from MP3 [2023 Latest]
MP3 to M4B] How to Create an M4B Audiobook from a Collection of MP3 Files?
MP3 to iPod Audio Book Converter - Freewaregenius.com