youtube-dl is a small command-line program to download videos from YouTube and more than 1000 sites. It requires the Python interpreter and is therefore platform-independent.

DownloadHelper is a tool for web content extraction. Its purpose is to capture video, audio, and image files from many sites.

JDownloader is a download manager, written in Java, which allows automatic download of groups of files from one-click hosting sites. JDownloader supports the use of premium accounts. Some parts, but not all, of JDownloader are open-source.

Command line program that's a youtube-dl fork that downloads videos from YouTube and over 1000 sites. yt-dlp is a youtube-dl fork based on the now inactive youtube-dlc.

Youtube-DLG (youtube-dl-gui, or yt-dlg) is a cross platform front-end GUI of the popular youtube-dl (or yt-dlp ) written in wxPython. It is open source and licensed in the public domain.

A cross-platform GUI for yt-dlp made in Electron and Node.js .

ClipGrab is a free downloader and converter for YouTube, Vimeo, Metacafe, Dailymotion and many other online video sites.

Kotlin Multiplatform Music Downloader, Supports Spotify / Gaana / Youtube Music / Jio Saavn.

A simple and straightforward utility that enables you to effortlessly download any type of file from the Internet and that comes with some privacy settings.

Youtube Video and Audio Downloader is an open-source project, downloading Youtube videos (using Firefox download manager) in all available formats (FLV, MP4, WebM, and 3GP) with video quality of your choice.