Annotate.tv - Optimize your learning on YouTube
Bashupload - Upload files from command line to share between servers
Prodeus - Track your time learning on YouTube to earn your free degree
FilePizza - Open source application used to transfer file via WebRTC and WebTorrent.
Slid - Capture knowledge from online videos, courses, and webinars
BlackHole File Transfer - Blockchain-based file transfer. Designed for everyday use.