Marvel for Keynote - Transform slides into interactive prototypes
Marvel + Dropbox Paper - Embed wireframes and interactive prototypes in Dropbox Paper
Sidekick - Email tracking plugin for Gmail.
Kite Compositor - A powerful animation and prototyping application for Mac & iOS.
Snackwyze - Clickable walkthroughs from screen recordings in seconds
Sketch The Ripper - Rip and share .sketch files on any OS in one click 💎