Vibby - Create + share highlights from any video in seconds
woosah - Create, customize & share YouTube videos, GIFs or music
TubeChop - TubeChop allows you to easily chop a funny or interesting section from any YouTube video and share it.
YesNoWTF Messenger bot - GIF backed foolproof™ decision making Messenger bot
YouTube Time! - Is there a way to link to a specific part of a YouTube video? Yes.
SkipTo - Skip to the best parts of a Youtube video