Mochi - Write notes and flashcards with Markdown and study them with spaced repetition.
Bookmark OS - Bookmark OS is like Mac or Windows optimized for bookmarks.
Fire Hunt - Discover product launches from all over the web at one place
Annotate.tv - Optimize your learning on YouTube
Rocket Note - Take notes & pin timestamps on YouTube. 🚀📝
BookmarkSheet - Your bookmarks in Google Sheets