Great Downloader easy to use can convert into multiple file formats. Fast and impressive
DistroKid - Unlimited uploads to iTunes and more. Keep 80-100% of your royalties.
Video DownloadHelper - Browser extension to download videos from the Web
TuneCore - Music distribution platform for artists to sell their content worldwide
youtube-dl-gui - A cross platform front-end GUI of the popular youtube-dl written in wxPython.
LANDR - LANDR is online music software for creators: music mastering, digital music distribution, free sample packs, collaboration tools, music promotion, and more. Try it free.
Youtube Video and Audio Downloader - Download YouTube videos in all available formats and extract the original audio files.