YTmp3 MOD APK v4.4.1_ytmp3 (Unlocked) - illuminaija
Anything2MP3|How To Convert Anything To MP3
Youtube 2 Mp3 - Venipa's Portfolio
GitHub - dreygur/Youtube2mp3: The YouTube 2 mp3 Add-on includes a Button on any YouTube Page and allows you to convert the YouTube Video to a mp3 with just one click.
YouTube-2-MP3.org (@YoutubetwoMP3) / Twitter
Download Youtube2MP3 1.0.7 for Windows | Uptodown.com
Youtube to Mp3 (yt-tomp3.com) (@youtubetomp3_c) / Twitter
Top 6 High Quality and Powerful Youtube to MP3 Converter