CONV. - Convert YouTube video to MP3, GIF or MP4
Project Ekalavya - Monthly book summaries that you can't forget
GifRun - GifRun provides easiest way to find and create animated GIFs from YouTube, Video, Images or Vine...
Bookstash - Bookstash is a free library of curated summaries from top nonfiction books.
Youtube Plus - Home of the extension YouTube Plus that allows you to experience more on YouTube - ParticleCore/Particle
tubecut. - The only YouTube downloader allows you to trim specific time