Bookmark It - Create awesome notes on YouTube videos
Marvel + Dropbox Paper - Embed wireframes and interactive prototypes in Dropbox Paper
Sidenote - Timestamped notes on YouTube videos
Kite Compositor - A powerful animation and prototyping application for Mac & iOS.
Video Search for YouTube - Search any YouTube video like a document.
Sketch The Ripper - Rip and share .sketch files on any OS in one click 💎