Video DownloadHelper - Browser extension to download videos from the Web
ClipConverter.cc - ClipConverter.
4k Video Downloader - 4K Video Downloader is a software program that helps people download video files from sites such as Facebook, YouTube and Dailymotion.
VidToMP3.com - VidToMP3.
youtube-dl-gui - A cross platform front-end GUI of the popular youtube-dl written in wxPython.
OnlineVideoConverter.com - OnlineVideoConverter.