VIDEO TOOLS
PLAYER
https://www.videolan.org/

RECORD
https://www.bandicam.com/
https://obsproject.com/
https://kdenlive.org/en/
https://www.audacityteam.org/

DOWNLOAD
https://www.downloadtwittervideo.com/
https://qdownloader.net/youtube-video-downloader
https://en.savefrom.net/17/ (no need to install anything)
https://www.downloadhelper.net/ (browser ad on)
https://technologyto.com/extractor.html
https://www.downloadhelper.net/