KeepDownloading is described as 'Free Internet Videos Downloader' and is an website in the Audio & Music category. There are more than 100 alternatives to KeepDownloading, not only websites but also apps for a variety of platforms, including Windows, Mac, Android and Linux. The best alternative is youtube-dl, which is both free and Open Source. Other great sites and apps similar to KeepDownloading are Youtube-DLG (Free, Open Source), 4k Video Downloader (Freemium), Video DownloadHelper (Freemium) and ClipGrab (Free, Open Source).
This free YouTube to MP3 downloader is a simple-to-use website for downloading videos from YouTube and converting them to MP3, OGG, WAV, and other audio formats. Using it for mp3 downloads is quite simple.