I use linux and android. So I don’t need it. One of my windows friend asked me about it. As you known windows users are scared of terminal so GUI programme. I would also like it to be open source.
If you install yt-dlp and make a script for downloading, then users drag and drop a link onto the script on their desktop, is this «GUI» enough to be used?
Just use yt-dlp. It’s not hard to use. You just type yt-dlp, paste the video link, and press enter to download the highest quality version.
yt-dlp is a command line tool but amazing. Works also on windows.
Not sure about Facebook since authenticating for private videos is a hurdle, but for my partner who uses a mac I downloaded open video downloader which is just a foss GUI for ytdl, it also keeps ytdl up to date which is a requirement for me since I don’t want to be called when it stops working. I think on windows you have to manually install msvc2010redist but besides that it seems to just work out of the box.
https://cobalt.tools is a great downloader for a lot of different sites. If you do want a desktop app, I would also recommend Parabolic.
I use Parabolic.