YouTube to MP3 Converter Online: 10 Best Sites and Apps to Download Music from YouTube on Android Mobile, iPhone, Laptop
Amazon.com: Video and Audio Downloader software for YouTube – download your favorite YouTube videos as MP4 video or MP3 audio – lifetime license – computer program compatible with Windows 11, 10, 8 and 7
mac OS X 向け YouTube ダウンローダー
How to Download YouTube to MP4 & MP3 on iPhone - MiniTool
GitHub - barclayd/YouTube-Downloader: Download and convert any YouTube video to MP4 or MP3. Built using Node.js