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CodePen - A front end web development playground.
Getfvid - Getfvid is an online tool that allows you to convert any Facebook video to mp3 or mp4 and download them without paying any fees.
CodeSandbox - Online playground for React
FastVid - FastVid offers a Video Downloader for Facebook that allows you to select any video from FB, copy its URL, paste it into the field, and click on download to save it to your device.
JS Bin - Sample of the bin:
VideoDownloader.io - Download any online video from your favorite websites