Giffing Tool - Giffing Tool is simply put: The fastest creator of high quality captioned GIFs available.
Video Speed Controller - Speed up, slow down, advance and rewind any HTML5 video with quick shortcuts.
GIPHY Create - Create animated GIFs from videos (by Giphy)
Faster Video - Allows manipulation of the playback rate of HTML5 videos
Instagiffer - Create GIFs from anything!
Saima - AI-based browser extension for personalized adaptive video speed.