Bookmark It - Create awesome notes on YouTube videos
TubeLister - Generate a YouTube playlist from your opened tabs.
Notepin - Extremely simple note-taking + blogging ✍️
OrganizeTube - Create video playlists from Youtube, Vimeo and other sources
Notion - All-in-one workspace. One tool for your whole team. Write, plan, and get organized.
Learnamic - Free and paid K-12 learning resources from hundreds of providers, including educational apps, YouTube videos, online classes, printable worksheets, and more.