There are many alternatives to youtube-dl for Linux if you are looking for a replacement. The best Linux alternative is Youtube-DLG, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to youtube-dl and many of them are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to youtube-dl are 4k Video Downloader (Freemium), Video DownloadHelper (Freemium), ClipGrab (Free, Open Source) and Youtube Video and Audio Downloader (Free, Open Source).
Movie downloader for youtube, metacafe, dailymotion, and many others, all those pesky sites that insist you use a big fat browser that runs flash in order to see their content. It's a command-line app written in straight C.
PlanetLagu is a very useful resource with open access to a variety of songs for its users. It has a very smooth and user-friendly interface as it can access music files out of a huge compilation with great ease.