m4b

Convert Audible aax files to mp3 and m4a/m4b

Audiobook Manager for Audible Users

m4b-tool is a command line utility to merge, split and chapterize audiobook files such as mp3, ogg, flac, m4a or m4b

A standalone Audible downloader and decrypter

Improved AudioBookConverter based on freeipodsoftware release (mp3 to m4b converter)

AI-powered multi-voice audiobook generator — LLM script annotation, voice cloning, voice design, LoRA training, per-line style control, and export to MP3, chaptered M4B, or Audacity multi-track. Built on Qwen3-TTS.

tone is a cross platform audio tagger and metadata editor to dump and modify metadata for a wide variety of formats, including mp3, m4b, flac and more. It has no dependencies and can be downloaded as single binary for Windows, macOS, Linux and other common platforms.

Docker container that watches a folder for multi-file mp3 books and converts them to a chapterized m4b.

VoxNovel: generate audiobooks giving each character a different voice actor.

An audiobook library cleanup and management tool built with Python and Django. Leveraging m4b-merge for audiobook standardization and editing. Ideal for enhancing audiobook library management.

Organize and rename audiobook libraries for Audiobookshelf using metadata.json, EPUB, MP3, and M4B metadata.

A high-performance Rust CLI to merge audiobooks into consistently tagged M4B files. Zero runtime deps, native chapter embedding, and 10x faster processing.

The Open Source Audible Converter

Tool to sync down your libro.fm library

A desktop app that converts folders of MP3 (or other audio) files into clean, properly chaptered M4B audiobooks you own outright.

A library for reading and writing iTunes style MPEG-4 audio metadata

A set of bash scripts to convert audio files into M4B audiobooks with chapter markers, customizable bitrate, book metadata and embedded cover art.

PHP package to parse and update audio files metadata, with JamesHeinrich/getID3.

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

Creates DRM free copies of Audible AAX audio books in both M4B and per chapter MP3/M3U, retaining all metadata including cover image. Supports re-encoding, parallel MP3 encoding and batch jobs.