FBTake's answer:
KeepVid - A free web application that allows you to download videos
FDOWN.net - Download Facebook videos and save them without using Java or installing software.
YoutubeMultiDownloader - Just like its name YouTube Multi Downloader, it is an online website for downloading the videos of downloading without using any video download and accelerator.
SnapSave - SnapSave allows you to download your favorite Facebook Videos in HD qualities, including 1080p, 2K, and 4k on any device.
SaveFrom.Biz - Convert YouTube video URL to MP4 file and download it to your device. SafeFrom is the best YouTube video downloader and converter.
Repost for Instagram Pro - Repost for Instagram Pro app allows you to repost images as well as videos to Instagram with the same hashtags and captions.