OBS Studio - Free and open source software for video recording and live streaming for Mac, Windows and Linux.
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.
Camtasia - Camtasia 2018 makes it easy to record your screen and create polished, professional-looking videos.
KeepVid - A free web application that allows you to download videos
TinyTake - Free 5 minutes recording and 2GB space and no youtube uploads, $29.95/year premium.
ShareTube - Watch YouTube, synced with friends.