Houseparty - Brining empathy to online communication.
4k Video Downloader - 4K Video Downloader is a software program that helps people download video files from sites such as Facebook, YouTube and Dailymotion.
Booyah - Video chat with up to 12 friends at the same time.
Video DownloadHelper - Browser extension to download videos from the Web
Slack - A messaging app for teams who see through the Earth!
youtube-dl-gui - A cross platform front-end GUI of the popular youtube-dl written in wxPython.