mp3gain

Lossless MP3 and AAC volume normalization: a maintained mp3gain / aacgain alternative in Rust, with CLI and GUI

Free front-end for the MP3gain.

MP3Gain Express for macOS, migrated to SwiftUI

A multi-threaded version of MP3Gain. Still feature incomplete but gets the job done. Quickly.

32-bit and 64-bit static binary builds of "mp3gain"

Reliability-first, cross-platform (Windows, macOS, Linux) Python/Tkinter GUI for yt-dlp and FFmpeg with optional MP3Gain. Convert YouTube videos and playlists into high-quality MP3s with proper ID3 tags, ReplayGain loudness normalization, playlist/CUE options, robust tool checks, and multilingual support (EN/FR).

Windows-first PySide6 MP3Gain GUI/CLI port with a vendored legacy C DLL backend for fast parallel ReplayGain analysis and gain application.

Lossless MP3 volume analysis and adjustment, with a CLI and a Windows/macOS GUI. A Python refactoring of the mp3gain source (LGPL-2.1-or-later), result-compatible with mp3gain.

Waveforge v1.4.0 — Offline DJ loudness & 4x true-peak mastering workstation for Windows, macOS Universal & Linux. Free 10-track starter + €34.99 Lifetime licence at https://waveforge-app.com