TubeLister - Generate a YouTube playlist from your opened tabs.
Learnamic - Free and paid K-12 learning resources from hundreds of providers, including educational apps, YouTube videos, online classes, printable worksheets, and more.
OrganizeTube - Create video playlists from Youtube, Vimeo and other sources
Otsimo - Otsimo is an educational app for children with special needs
CourseFinder - CourseFinder helps you find the course that’s right for you.
Vidlis - Create music playlists from YouTube videos.