TubeLister - Generate a YouTube playlist from your opened tabs.
you-tldr - Get the tldr of any YouTube video in seconds
Tuned Rocks📺 - Discover🔎 curated Youtube videos 24/7
tubecut. - The only YouTube downloader allows you to trim specific time
Vidlis - Create music playlists from YouTube videos.
TLDR This - Automatically summarize any article or webpage in a click.