Vibby - Create + share highlights from any video in seconds
YouTube Time! - Is there a way to link to a specific part of a YouTube video? Yes.
MediaMachine - Infrastructure for user-generated video content
WP Livestream - A WordPress plugin that automatically embeds live stream video on your website.
TubeChop - TubeChop allows you to easily chop a funny or interesting section from any YouTube video and share it.
YT Vids - This website helps you to save your favorite YouTube videos.