MKVToolnix - MKVToolnix is a set of tools to create, alter and inspect Matroska files under Linux, other Unices...
4k Video Downloader - 4K Video Downloader is a software program that helps people download video files from sites such as Facebook, YouTube and Dailymotion.
MKVCleaver - MKVcleaver is a GUI (Graphical User Interface) for mkvtoolnix, designed to extract data from MKV...
Video DownloadHelper - Browser extension to download videos from the Web
HandBrake - HandBrake allows users to easily convert video files into a wide variety of different formats.
youtube-dl-gui - A cross platform front-end GUI of the popular youtube-dl written in wxPython.